/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */

/* Metacity X managed windows */

/*
 * Copyright (C) 2001 Havoc Pennington, Anders Carlsson
 * Copyright (C) 2002, 2003 Red Hat, Inc.
 * Copyright (C) 2003 Rob Adams
 * Copyright (C) 2004-2006 Elijah Newren
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include <X11/extensions/XInput2.h>
#include <gdk/gdkx.h>
#include "window-private.h"
#include "edge-resistance.h"
#include "util.h"
#include "frame-private.h"
#include "errors.h"
#include "workspace.h"
#include "stack.h"
#include "keybindings.h"
#include "ui.h"
#include "place.h"
#include "session.h"
#include "effects.h"
#include "prefs.h"
#include "resizepopup.h"
#include "xprops.h"
#include "group.h"
#include "window-props.h"
#include "constraints.h"
#include "compositor.h"
#include "effects.h"
#include "deepin-message-hub.h"

#include <X11/Xatom.h>
#include <X11/Xlibint.h> /* For display->resource_mask */
#include <string.h>
#include <cairo/cairo-xlib.h>

#include <X11/extensions/shape.h>

static int destroying_windows_disallowed = 0;


static void     update_sm_hints           (MetaWindow     *window);
static void     update_net_frame_extents  (MetaWindow     *window);
static void     restack_window            (MetaWindow     *window,
                                           MetaWindow     *sibling,
                                           int             direction);
static void     recalc_window_type        (MetaWindow     *window);
static void     recalc_window_features    (MetaWindow     *window);
static void     invalidate_work_areas     (MetaWindow     *window);
static void     set_wm_state              (MetaWindow     *window,
                                           int             state);
static void     set_net_wm_state          (MetaWindow     *window);

static void     send_configure_notify     (MetaWindow     *window);
static gboolean process_property_notify   (MetaWindow     *window,
                                           XPropertyEvent *event);
static void     meta_window_show          (MetaWindow     *window);
static void     meta_window_hide          (MetaWindow     *window);
static void     meta_window_force_placement (MetaWindow     *window);

static gboolean meta_window_same_client (MetaWindow *window,
                                         MetaWindow *other_window);

static void     meta_window_save_rect         (MetaWindow    *window);
static void     save_user_window_placement    (MetaWindow    *window);
static void     force_save_user_window_placement (MetaWindow    *window);

static void meta_window_move_resize_internal (MetaWindow         *window,
                                              MetaMoveResizeFlags flags,
                                              int                 resize_gravity,
                                              int                 root_x_nw,
                                              int                 root_y_nw,
                                              int                 w,
                                              int                 h);

static void     ensure_mru_position_after (MetaWindow *window,
                                           MetaWindow *after_this_one);


static void meta_window_move_resize_now (MetaWindow  *window);

static void meta_window_unqueue (MetaWindow *window, guint queuebits);

static void     update_move           (MetaWindow   *window,
                                       gboolean      snap,
                                       int           x,
                                       int           y);
static gboolean update_move_timeout   (gpointer data);
static void     update_resize         (MetaWindow   *window,
                                       gboolean      snap,
                                       int           x,
                                       int           y,
                                       gboolean      force);
static gboolean update_resize_timeout (gpointer data);


static void meta_window_flush_calc_showing   (MetaWindow *window);

static gboolean queue_calc_showing_func (MetaWindow *window,
                                         void       *data);

static void meta_window_apply_session_info (MetaWindow                  *window,
                                            const MetaWindowSessionInfo *info);

static void unmaximize_window_before_freeing (MetaWindow        *window);
static void unminimize_window_and_all_transient_parents (MetaWindow *window);

/* Idle handlers for the three queues. The "data" parameter in each case
 * will be a GINT_TO_POINTER of the index into the queue arrays to use.
 *
 * TODO: Possibly there is still some code duplication among these, which we
 * need to sort out at some point.
 */
static gboolean idle_calc_showing (gpointer data);
static gboolean idle_move_resize (gpointer data);
static gboolean idle_update_icon (gpointer data);

#ifdef WITH_VERBOSE_MODE
static const char*
wm_state_to_string (int state)
{
  switch (state)
    {
    case NormalState:
      return "NormalState";
    case IconicState:
      return "IconicState";
    case WithdrawnState:
      return "WithdrawnState";
    default:
      break;
    }

  return "Unknown";
}
#endif

static gboolean
is_desktop_or_dock_foreach (MetaWindow *window,
                            void       *data)
{
  gboolean *result = data;

  *result =
    window->type == META_WINDOW_DESKTOP ||
    window->type == META_WINDOW_DOCK;
  if (*result)
    return FALSE; /* stop as soon as we find one */
  else
    return TRUE;
}

/* window is the window that's newly mapped provoking
 * the possible change
 */
static void
maybe_leave_show_desktop_mode (MetaWindow *window)
{
  gboolean is_desktop_or_dock;

  if (!window->screen->active_workspace->showing_desktop)
    return;

  /* If the window is a transient for the dock or desktop, don't
   * leave show desktop mode when the window opens. That's
   * so you can e.g. hide all windows, manipulate a file on
   * the desktop via a dialog, then unshow windows again.
   */
  is_desktop_or_dock = FALSE;
  is_desktop_or_dock_foreach (window,
                              &is_desktop_or_dock);

  meta_window_foreach_ancestor (window, is_desktop_or_dock_foreach,
                                &is_desktop_or_dock);

  if (!is_desktop_or_dock)
    {
      meta_screen_minimize_all_on_active_workspace_except (window->screen,
                                                           window);
      meta_screen_unshow_desktop (window->screen);
    }
}

MetaWindow*
meta_window_new (MetaDisplay *display,
                 Window       xwindow,
                 gboolean     must_be_viewable)
{
  XWindowAttributes attrs;
  MetaWindow *window;

  meta_display_grab (display);
  meta_error_trap_push (display); /* Push a trap over all of window
                                   * creation, to reduce XSync() calls
                                   */

  meta_error_trap_push_with_return (display);

  if (XGetWindowAttributes (display->xdisplay,xwindow, &attrs))
   {
      if(meta_error_trap_pop_with_return (display, TRUE) != Success)
       {
          meta_verbose ("Failed to get attributes for window 0x%lx\n",
                        xwindow);
          meta_error_trap_pop (display, TRUE);
          meta_display_ungrab (display);
          return NULL;
       }
      window = meta_window_new_with_attrs (display, xwindow,
                                       must_be_viewable, &attrs);
   }
  else
   {
         meta_error_trap_pop_with_return (display, TRUE);
         meta_verbose ("Failed to get attributes for window 0x%lx\n",
                        xwindow);
         meta_error_trap_pop (display, TRUE);
         meta_display_ungrab (display);
         return NULL;
   }


  meta_error_trap_pop (display, FALSE);
  meta_display_ungrab (display);

  if (window) deepin_message_hub_window_added(window);
  return window;
}

MetaWindow*
meta_window_new_with_attrs (MetaDisplay       *display,
                            Window             xwindow,
                            gboolean           must_be_viewable,
                            XWindowAttributes *attrs)
{
  MetaWindow *window;
  GSList *tmp;
  MetaWorkspace *space;
  gulong existing_wm_state;
  gulong event_mask;
  MetaMoveResizeFlags flags;
  gboolean has_shape;

  g_assert (attrs != NULL);

  meta_verbose ("Attempting to manage 0x%lx\n", xwindow);

  if (meta_display_xwindow_is_a_no_focus_window (display, xwindow))
    {
      meta_verbose ("Not managing no_focus_window 0x%lx\n",
                    xwindow);
      return NULL;
    }

  MetaScreen* screen = NULL;
  for (tmp = display->screens; tmp != NULL; tmp = tmp->next)
    {
      MetaScreen *scr = (MetaScreen*)tmp->data;

      if (scr->xroot == attrs->root)
        {
          screen = tmp->data;
          break;
        }
    }

  g_assert (screen);

  if (xwindow == screen->guard_window) 
    {
      meta_verbose ("Not to manage screen guard window 0x%lx\n", xwindow);
      return NULL;
    }

  GArray* arr = screen->desktop_bg_windows;
  gint n_bg = arr->len;
  for (int i = 0; i < n_bg; i++) {
    Window xid = g_array_index(arr, Window, i);
    if (xwindow == xid)
      {
        meta_verbose ("Not to manage screen dekstop window 0x%lx\n", xwindow);
        return NULL;
      }
  }


  if (attrs->override_redirect)
    {
      meta_verbose ("Deciding not to manage override_redirect window 0x%lx\n", xwindow);
      return NULL;
    }

  /* Grab server */
  meta_display_grab (display);
  meta_error_trap_push (display); /* Push a trap over all of window
                                   * creation, to reduce XSync() calls
                                   */

  meta_verbose ("must_be_viewable = %d attrs->map_state = %d (%s)\n",
                must_be_viewable,
                attrs->map_state,
                (attrs->map_state == IsUnmapped) ?
                "IsUnmapped" :
                (attrs->map_state == IsViewable) ?
                "IsViewable" :
                (attrs->map_state == IsUnviewable) ?
                "IsUnviewable" :
                "(unknown)");

  existing_wm_state = WithdrawnState;
  if (must_be_viewable && attrs->map_state != IsViewable)
    {
      /* Only manage if WM_STATE is IconicState or NormalState */
      gulong state;

      /* WM_STATE isn't a cardinal, it's type WM_STATE, but is an int */
      if (!(meta_prop_get_cardinal_with_atom_type (display, xwindow,
                                                   display->atom_WM_STATE,
                                                   display->atom_WM_STATE,
                                                   &state) &&
            (state == IconicState || state == NormalState)))
        {
          meta_verbose ("Deciding not to manage unmapped or unviewable window 0x%lx\n", xwindow);
          meta_error_trap_pop (display, TRUE);
          meta_display_ungrab (display);
          return NULL;
        }

      existing_wm_state = state;
      meta_verbose ("WM_STATE of %lx = %s\n", xwindow,
                    wm_state_to_string (existing_wm_state));
    }

  XAddToSaveSet (display->xdisplay, xwindow);
  
  meta_error_trap_push_with_return (display);

  event_mask = PropertyChangeMask | ColormapChangeMask;

  XSelectInput (display->xdisplay, xwindow, event_mask);

  {
    unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 };
    XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits };

    XISetMask (mask.mask, XI_Enter);
    XISetMask (mask.mask, XI_Leave);
    XISetMask (mask.mask, XI_FocusIn);
    XISetMask (mask.mask, XI_FocusOut);

    XISelectEvents (display->xdisplay, xwindow, &mask, 1);
  }

  has_shape = FALSE;
  if (META_DISPLAY_HAS_SHAPE (display))
    {
      int x_bounding, y_bounding, x_clip, y_clip;
      unsigned w_bounding, h_bounding, w_clip, h_clip;
      int bounding_shaped, clip_shaped;

      XShapeSelectInput (display->xdisplay, xwindow, ShapeNotifyMask);

      XShapeQueryExtents (display->xdisplay, xwindow,
                          &bounding_shaped, &x_bounding, &y_bounding,
                          &w_bounding, &h_bounding,
                          &clip_shaped, &x_clip, &y_clip,
                          &w_clip, &h_clip);

      has_shape = bounding_shaped != FALSE;

      meta_topic (META_DEBUG_SHAPES,
                  "Window has_shape = %d extents %d,%d %u x %u\n",
                  has_shape, x_bounding, y_bounding,
                  w_bounding, h_bounding);
    }

  /* Get rid of any borders */
  if (attrs->border_width != 0)
    XSetWindowBorderWidth (display->xdisplay, xwindow, 0);

  /* Get rid of weird gravities */
  if (attrs->win_gravity != NorthWestGravity)
    {
      XSetWindowAttributes set_attrs;

      set_attrs.win_gravity = NorthWestGravity;

      XChangeWindowAttributes (display->xdisplay,
                               xwindow,
                               CWWinGravity,
                               &set_attrs);
    }

  if (meta_error_trap_pop_with_return (display, FALSE) != Success)
    {
      meta_verbose ("Window 0x%lx disappeared just as we tried to manage it\n",
                    xwindow);
      meta_error_trap_pop (display, FALSE);
      meta_display_ungrab (display);
      return NULL;
    }

  g_assert (!attrs->override_redirect);

  window = g_new (MetaWindow, 1);

  window->constructing = TRUE;

  window->dialog_pid = -1;

  window->xwindow = xwindow;

  /* this is in window->screen->display, but that's too annoying to
   * type
   */
  window->display = display;
  window->workspace = NULL;

  window->sync_request_counter = None;
  window->sync_request_serial = 0;
  window->sync_request_time.tv_sec = 0;
  window->sync_request_time.tv_usec = 0;

  window->screen = NULL;
  tmp = display->screens;
  while (tmp != NULL)
    {
      MetaScreen *scr = tmp->data;

      if (scr->xroot == attrs->root)
        {
          window->screen = tmp->data;
          break;
        }

      tmp = tmp->next;
    }

  g_assert (window->screen);

  window->desc = g_strdup_printf ("0x%lx", window->xwindow);

  /* avoid tons of stack updates */
  meta_stack_freeze (window->screen->stack);

  window->deepin_override = FALSE;
  window->hide_titlebar_when_maximized = FALSE;

  window->has_shape = has_shape;

  window->rect.x = attrs->x;
  window->rect.y = attrs->y;
  window->rect.width = attrs->width;
  window->rect.height = attrs->height;

  /* And border width, size_hints are the "request" */
  window->border_width = attrs->border_width;
  window->size_hints.x = attrs->x;
  window->size_hints.y = attrs->y;
  window->size_hints.width = attrs->width;
  window->size_hints.height = attrs->height;
  /* initialize the remaining size_hints as if size_hints.flags were zero */
  meta_set_normal_hints (window, NULL);

  window->has_custom_frame_extents = FALSE;
  window->custom_frame_extents.left = 0;
  window->custom_frame_extents.right = 0;
  window->custom_frame_extents.top = 0;
  window->custom_frame_extents.bottom = 0;

  /* And this is our unmaximized size */
  window->saved_rect = window->rect;
  window->user_rect = window->rect;

  window->depth = attrs->depth;
  window->xvisual = attrs->visual;
  window->colormap = attrs->colormap;

  window->title = NULL;
  window->icon_name = NULL;
  window->icon = NULL;
  window->mini_icon = NULL;
  meta_icon_cache_init (&window->icon_cache);
  window->wm_hints_pixmap = None;
  window->wm_hints_mask = None;

  window->frame = NULL;
  window->has_focus = FALSE;

  window->maximized_horizontally = FALSE;
  window->maximized_vertically = FALSE;
  window->maximize_horizontally_after_placement = FALSE;
  window->maximize_vertically_after_placement = FALSE;
  window->minimize_after_placement = FALSE;
  window->fullscreen_after_placement = FALSE;
  window->fullscreen_monitors[0] = -1;
  window->require_fully_onscreen = TRUE;
  window->require_on_single_xinerama = TRUE;
  window->require_titlebar_visible = TRUE;
  window->on_all_workspaces = FALSE;
  window->tile_mode = META_TILE_NONE;
  window->tile_monitor_number = -1;
  window->shaded = FALSE;
  window->fullscreen = FALSE;
  window->initially_iconic = FALSE;
  window->minimized = FALSE;
  window->was_minimized = FALSE;
  window->tab_unminimized = FALSE;
  window->iconic = FALSE;
  window->mapped = attrs->map_state != IsUnmapped;
  window->hidden = FALSE;
  /* if already mapped, no need to worry about focus-on-first-time-showing */
  window->showing_for_first_time = !window->mapped;
  /* if already mapped we don't want to do the placement thing */
  window->placed = window->mapped && !window->hidden;
  if (window->placed)
    meta_topic (META_DEBUG_PLACEMENT,
                "Not placing window 0x%lx since it's already mapped\n",
                xwindow);
  window->force_save_user_rect = TRUE;
  window->denied_focus_and_not_transient = FALSE;
  window->unmanaging = FALSE;
  window->is_in_queues = 0;
  window->keys_grabbed = FALSE;
  window->grab_on_frame = FALSE;
  window->all_keys_grabbed = FALSE;
  window->withdrawn = FALSE;
  window->initial_workspace_set = FALSE;
  window->initial_timestamp_set = FALSE;
  window->net_wm_user_time_set = FALSE;
  window->user_time_window = None;
  window->take_focus = FALSE;
  window->input = TRUE;
  window->calc_placement = FALSE;
  window->shaken_loose = FALSE;
  window->have_focus_click_grab = FALSE;
  window->disable_sync = FALSE;
  window->frame_bounds = NULL;

  window->unmaps_pending = 0;

  window->mwm_decorated = TRUE;
  window->mwm_border_only = FALSE;
  window->mwm_has_close_func = TRUE;
  window->mwm_has_minimize_func = TRUE;
  window->mwm_has_maximize_func = TRUE;
  window->mwm_has_move_func = TRUE;
  window->mwm_has_resize_func = TRUE;

  window->decorated = TRUE;
  window->has_close_func = TRUE;
  window->has_minimize_func = TRUE;
  window->has_maximize_func = TRUE;
  window->has_move_func = TRUE;
  window->has_resize_func = TRUE;

  window->has_shade_func = TRUE;

  window->has_fullscreen_func = TRUE;

  window->always_sticky = FALSE;

  window->wm_state_modal = FALSE;
  window->skip_taskbar = FALSE;
  window->skip_pager = FALSE;
  window->wm_state_skip_taskbar = FALSE;
  window->wm_state_skip_pager = FALSE;
  window->wm_state_above = FALSE;
  window->wm_state_below = FALSE;
  window->wm_state_demands_attention = FALSE;

  window->res_class = NULL;
  window->res_name = NULL;
  window->role = NULL;
  window->sm_client_id = NULL;
  window->wm_client_machine = NULL;
  window->startup_id = NULL;
  window->gtk_theme_variant = NULL;
  window->flatpak_appid = NULL;

  window->net_wm_pid = -1;

  window->xtransient_for = None;
  window->xclient_leader = None;
  window->transient_parent_is_root_window = FALSE;

  window->type = META_WINDOW_NORMAL;
  window->type_atom = None;

  window->struts = NULL;

  window->using_net_wm_name              = FALSE;
  window->using_net_wm_visible_name      = FALSE;
  window->using_net_wm_icon_name         = FALSE;
  window->using_net_wm_visible_icon_name = FALSE;

  window->need_reread_icon = TRUE;

  window->layer = META_LAYER_LAST; /* invalid value */
  window->stack_position = -1;
  window->initial_workspace = 0; /* not used */
  window->initial_timestamp = 0; /* not used */

  meta_display_register_x_window (display, &window->xwindow, window);


  /* assign the window to its group, or create a new group if needed
   */
  window->group = NULL;
  window->xgroup_leader = None;
  meta_window_compute_group (window);

  meta_window_load_initial_properties (window);

  update_sm_hints (window); /* must come after transient_for */
  meta_window_update_icon_now (window);

  if (window->initially_iconic)
    {
      /* WM_HINTS said minimized */
      window->minimized = TRUE;
      meta_verbose ("Window %s asked to start out minimized\n", window->desc);
    }

  if (existing_wm_state == IconicState)
    {
      /* WM_STATE said minimized */
      window->minimized = TRUE;
      meta_verbose ("Window %s had preexisting WM_STATE = IconicState, minimizing\n",
                    window->desc);

      /* Assume window was previously placed, though perhaps it's
       * been iconic its whole life, we have no way of knowing.
       */
      window->placed = TRUE;
    }

  /* Apply any window attributes such as initial workspace
   * based on startup notification
   */
  meta_screen_apply_startup_properties (window->screen, window);

  /* Try to get a "launch timestamp" for the window.  If the window is
   * a transient, we'd like to be able to get a last-usage timestamp
   * from the parent window.  If the window has no parent, there isn't
   * much we can do...except record the current time so that any children
   * can use this time as a fallback.
   */
  if (!window->net_wm_user_time_set) {
    MetaWindow *parent = NULL;
    if (window->xtransient_for)
      parent = meta_display_lookup_x_window (window->display,
                                             window->xtransient_for);

    /* First, maybe the app was launched with startup notification using an
     * obsolete version of the spec; use that timestamp if it exists.
     */
    if (window->initial_timestamp_set)
      /* NOTE: Do NOT toggle net_wm_user_time_set to true; this is just
       * being recorded as a fallback for potential transients
       */
      window->net_wm_user_time = window->initial_timestamp;
    else if (parent != NULL)
      meta_window_set_user_time(window, parent->net_wm_user_time);
    else
      /* NOTE: Do NOT toggle net_wm_user_time_set to true; this is just
       * being recorded as a fallback for potential transients
       */
      window->net_wm_user_time =
        meta_display_get_current_time_roundtrip (window->display);
  }

  if (window->decorated)
    meta_window_ensure_frame (window);

  meta_window_grab_keys (window);
  if (window->type != META_WINDOW_DOCK)
    {
      meta_display_grab_window_buttons (window->display, window->xwindow);
      meta_display_grab_focus_window_button (window->display, window);
    }

  if (window->type == META_WINDOW_DESKTOP ||
      window->type == META_WINDOW_DOCK)
    {
      /* Change the default, but don't enforce this if the user
       * focuses the dock/desktop and unsticks it using key shortcuts.
       * Need to set this before adding to the workspaces so the MRU
       * lists will be updated.
       */
      window->on_all_workspaces = TRUE;
    }

  /* For the workspace, first honor hints,
   * if that fails put transients with parents,
   * otherwise put window on active space
   */

  if (window->initial_workspace_set)
    {
      if (window->initial_workspace == (int) 0xFFFFFFFF)
        {
          meta_topic (META_DEBUG_PLACEMENT,
                      "Window %s is initially on all spaces\n",
                      window->desc);

	  /* need to set on_all_workspaces first so that it will be
	   * added to all the MRU lists
	   */
          window->on_all_workspaces = TRUE;
          meta_workspace_add_window (window->screen->active_workspace, window);
        }
      else
        {
          meta_topic (META_DEBUG_PLACEMENT,
                      "Window %s is initially on space %d\n",
                      window->desc, window->initial_workspace);

          space =
            meta_screen_get_workspace_by_index (window->screen,
                                                window->initial_workspace);

          if (space)
            meta_workspace_add_window (space, window);
        }
    }

  if (window->workspace == NULL &&
      window->xtransient_for != None)
    {
      /* Try putting dialog on parent's workspace */
      MetaWindow *parent;

      parent = meta_display_lookup_x_window (window->display,
                                             window->xtransient_for);

      if (parent && parent->workspace)
        {
          meta_topic (META_DEBUG_PLACEMENT,
                      "Putting window %s on same workspace as parent %s\n",
                      window->desc, parent->desc);

          if (parent->on_all_workspaces)
            window->on_all_workspaces = TRUE;

	  /* this will implicitly add to the appropriate MRU lists
	   */
          meta_workspace_add_window (parent->workspace, window);
        }
    }

  if (window->workspace == NULL)
    {
      meta_topic (META_DEBUG_PLACEMENT,
                  "Putting window %s on active workspace\n",
                  window->desc);

      space = window->screen->active_workspace;

      meta_workspace_add_window (space, window);
    }

  /* for the various on_all_workspaces = TRUE possible above */
  meta_window_set_current_workspace_hint (window);

  meta_window_update_struts (window);

  /* Must add window to stack before doing move/resize, since the
   * window might have fullscreen size (i.e. should have been
   * fullscreen'd; acrobat is one such braindead case; it withdraws
   * and remaps its window whenever trying to become fullscreen...)
   * and thus constraints may try to auto-fullscreen it which also
   * means restacking it.
   */
  meta_stack_add (window->screen->stack,
                  window);

  /* Put our state back where it should be,
   * passing TRUE for is_configure_request, ICCCM says
   * initial map is handled same as configure request
   */
  flags =
    META_IS_CONFIGURE_REQUEST | META_IS_MOVE_ACTION | META_IS_RESIZE_ACTION;
  meta_window_move_resize_internal (window,
                                    flags,
                                    window->size_hints.win_gravity,
                                    window->size_hints.x,
                                    window->size_hints.y,
                                    window->size_hints.width,
                                    window->size_hints.height);

  /* Now try applying saved stuff from the session */
  {
    const MetaWindowSessionInfo *info;

    info = meta_window_lookup_saved_state (window);

    if (info)
      {
        meta_window_apply_session_info (window, info);
        meta_window_release_saved_state (info);
      }
  }

  /* FIXME we have a tendency to set this then immediately
   * change it again.
   */
  set_wm_state (window, window->iconic ? IconicState : NormalState);
  set_net_wm_state (window);

  /* Sync stack changes */
  meta_stack_thaw (window->screen->stack);

  /* disable show desktop mode unless we're a desktop component */
  maybe_leave_show_desktop_mode (window);

  meta_window_queue (window, META_QUEUE_CALC_SHOWING);
  /* See bug 303284; a transient of the given window can already exist, in which
   * case we think it should probably be shown.
   */
  meta_window_foreach_transient (window,
                                 queue_calc_showing_func,
                                 NULL);
  /* See bug 334899; the window may have minimized ancestors
   * which need to be shown.
   *
   * However, we shouldn't unminimize windows here when opening
   * a new display because that breaks passing _NET_WM_STATE_HIDDEN
   * between window managers when replacing them; see bug 358042.
   *
   * And we shouldn't unminimize windows if they were initially
   * iconic.
   */
  if (!display->display_opening && !window->initially_iconic)
    unminimize_window_and_all_transient_parents (window);

  meta_error_trap_pop (display, FALSE); /* pop the XSync()-reducing trap */
  meta_display_ungrab (display);

  window->constructing = FALSE;

  return window;
}

/* This function should only be called from the end of meta_window_new_with_attrs () */
static void
meta_window_apply_session_info (MetaWindow *window,
                                const MetaWindowSessionInfo *info)
{
  if (info->stack_position_set)
    {
      meta_topic (META_DEBUG_SM,
                  "Restoring stack position %d for window %s\n",
                  info->stack_position, window->desc);

      /* FIXME well, I'm not sure how to do this. */
    }

  if (info->minimized_set)
    {
      meta_topic (META_DEBUG_SM,
                  "Restoring minimized state %d for window %s\n",
                  info->minimized, window->desc);

      if (window->has_minimize_func && info->minimized)
        meta_window_minimize (window);
    }

  if (info->maximized_set)
    {
      meta_topic (META_DEBUG_SM,
                  "Restoring maximized state %d for window %s\n",
                  info->maximized, window->desc);

      if (window->has_maximize_func && info->maximized)
        {
          meta_window_maximize (window,
                                META_MAXIMIZE_HORIZONTAL |
                                META_MAXIMIZE_VERTICAL);

          if (info->saved_rect_set)
            {
              meta_topic (META_DEBUG_SM,
                          "Restoring saved rect %d,%d %dx%d for window %s\n",
                          info->saved_rect.x,
                          info->saved_rect.y,
                          info->saved_rect.width,
                          info->saved_rect.height,
                          window->desc);

              window->saved_rect.x = info->saved_rect.x;
              window->saved_rect.y = info->saved_rect.y;
              window->saved_rect.width = info->saved_rect.width;
              window->saved_rect.height = info->saved_rect.height;
            }
	}
    }

  if (info->on_all_workspaces_set)
    {
      window->on_all_workspaces = info->on_all_workspaces;
      meta_topic (META_DEBUG_SM,
                  "Restoring sticky state %d for window %s\n",
                  window->on_all_workspaces, window->desc);
    }

  if (info->workspace_indices)
    {
      GSList *tmp;
      GSList *spaces;

      spaces = NULL;

      tmp = info->workspace_indices;
      while (tmp != NULL)
        {
          MetaWorkspace *space;

          space =
            meta_screen_get_workspace_by_index (window->screen,
                                                GPOINTER_TO_INT (tmp->data));

          if (space)
            spaces = g_slist_prepend (spaces, space);

          tmp = tmp->next;
        }

      if (spaces)
        {
          /* This briefly breaks the invariant that we are supposed
           * to always be on some workspace. But we paranoically
           * ensured that one of the workspaces from the session was
           * indeed valid, so we know we'll go right back to one.
           */
          if (window->workspace)
            meta_workspace_remove_window (window->workspace, window);

          /* Only restore to the first workspace if the window
           * happened to be on more than one, since we have replaces
           * window->workspaces with window->workspace
           */
          meta_workspace_add_window (spaces->data, window);

          meta_topic (META_DEBUG_SM,
                      "Restoring saved window %s to workspace %d\n",
                      window->desc,
                      meta_workspace_index (spaces->data));

          g_slist_free (spaces);
        }
    }

  if (info->geometry_set)
    {
      int x, y, w, h;
      MetaMoveResizeFlags flags;

      window->placed = TRUE; /* don't do placement algorithms later */

      x = info->rect.x;
      y = info->rect.y;

      w = window->size_hints.base_width +
        info->rect.width * window->size_hints.width_inc;
      h = window->size_hints.base_height +
        info->rect.height * window->size_hints.height_inc;

      /* Force old gravity, ignoring anything now set */
      window->size_hints.win_gravity = info->gravity;

      meta_topic (META_DEBUG_SM,
                  "Restoring pos %d,%d size %d x %d for %s\n",
                  x, y, w, h, window->desc);

      flags = META_DO_GRAVITY_ADJUST | META_IS_MOVE_ACTION | META_IS_RESIZE_ACTION;
      meta_window_move_resize_internal (window,
                                        flags,
                                        window->size_hints.win_gravity,
                                        x, y, w, h);
    }
}

void
meta_window_free (MetaWindow  *window,
                  guint32      timestamp)
{
  deepin_message_hub_window_removed(window);
  GList *tmp;

  meta_verbose ("Unmanaging 0x%lx\n", window->xwindow);

  if (window->display->compositor)
    meta_compositor_free_window (window->display->compositor, window);

  if (window->display->window_with_menu == window)
    {
      meta_ui_window_menu_free (window->display->window_menu);
      window->display->window_menu = NULL;
      window->display->window_with_menu = NULL;
    }

  if (destroying_windows_disallowed > 0)
    meta_bug ("Tried to destroy window %s while destruction was not allowed\n",
              window->desc);

  window->unmanaging = TRUE;

  if (window->fullscreen)
    {
      MetaGroup *group;

      /* If the window is fullscreen, it may be forcing
       * other windows in its group to a higher layer
       */

      meta_stack_freeze (window->screen->stack);
      group = meta_window_get_group (window);
      if (group)
        meta_group_update_layers (group);
      meta_stack_thaw (window->screen->stack);
    }

  meta_window_shutdown_group (window); /* safe to do this early as
                                        * group.c won't re-add to the
                                        * group if window->unmanaging
                                        */

  /* If we have the focus, focus some other window.
   * This is done first, so that if the unmap causes
   * an EnterNotify the EnterNotify will have final say
   * on what gets focused, maintaining sloppy focus
   * invariants.
   */
  if (window->has_focus)
    {
      meta_topic (META_DEBUG_FOCUS,
                  "Focusing default window since we're unmanaging %s\n",
                  window->desc);
      meta_workspace_focus_default_window (window->screen->active_workspace,
                                           window,
                                           timestamp);
    }
  else if (window->display->expected_focus_window == window)
    {
      meta_topic (META_DEBUG_FOCUS,
                  "Focusing default window since expected focus window freed %s\n",
                  window->desc);
      window->display->expected_focus_window = NULL;
      meta_workspace_focus_default_window (window->screen->active_workspace,
                                           window,
                                           timestamp);
    }
  else
    {
      meta_topic (META_DEBUG_FOCUS,
                  "Unmanaging window %s which doesn't currently have focus\n",
                  window->desc);
    }

  if (window->struts)
    {
      meta_free_gslist_and_elements (window->struts);
      window->struts = NULL;

      meta_topic (META_DEBUG_WORKAREA,
                  "Unmanaging window %s which has struts, so invalidating work areas\n",
                  window->desc);
      invalidate_work_areas (window);
    }

  if (window->display->grab_window == window)
    meta_display_end_grab_op (window->display, timestamp);

  g_assert (window->display->grab_window != window);

  if (window->display->focus_window == window)
    {
      window->display->focus_window = NULL;
      meta_compositor_set_active_window (window->display->compositor,
                                         window->screen, NULL);
    }

  if (window->maximized_horizontally || window->maximized_vertically)
    unmaximize_window_before_freeing (window);

  /* The XReparentWindow call in meta_window_destroy_frame() moves the
   * window so we need to send a configure notify; see bug 399552.  (We
   * also do this just in case a window got unmaximized.)
   */
  send_configure_notify (window);

  meta_window_unqueue (window, META_QUEUE_CALC_SHOWING |
                               META_QUEUE_MOVE_RESIZE |
                               META_QUEUE_UPDATE_ICON);
  meta_window_free_delete_dialog (window);

  if (window->workspace)
    meta_workspace_remove_window (window->workspace, window);

  g_assert (window->workspace == NULL);

#ifndef G_DISABLE_CHECKS
  tmp = window->screen->workspaces;
  while (tmp != NULL)
    {
      MetaWorkspace *workspace = tmp->data;

      g_assert (g_list_find (workspace->windows, window) == NULL);
      g_assert (g_list_find (workspace->mru_list, window) == NULL);

      tmp = tmp->next;
    }
#endif

  meta_stack_remove (window->screen->stack, window);

  if (window->frame)
    meta_window_destroy_frame (window);

  if (window->withdrawn)
    {
      /* We need to clean off the window's state so it
       * won't be restored if the app maps it again.
       */
      meta_error_trap_push (window->display);
      meta_verbose ("Cleaning state from window %s\n", window->desc);
      XDeleteProperty (window->display->xdisplay,
                       window->xwindow,
                       window->display->atom__NET_WM_DESKTOP);
      XDeleteProperty (window->display->xdisplay,
                       window->xwindow,
                       window->display->atom__NET_WM_STATE);
      XDeleteProperty (window->display->xdisplay,
                       window->xwindow,
                       window->display->atom__NET_WM_FULLSCREEN_MONITORS);
      set_wm_state (window, WithdrawnState);
      meta_error_trap_pop (window->display, FALSE);
    }
  else
    {
      /* We need to put WM_STATE so that others will understand it on
       * restart.
       */
      if (!window->minimized)
        {
          meta_error_trap_push (window->display);
          set_wm_state (window, NormalState);
          meta_error_trap_pop (window->display, FALSE);
        }

      /* And we need to be sure the window is mapped so other WMs
       * know that it isn't Withdrawn
       */
      meta_error_trap_push (window->display);
      XMapWindow (window->display->xdisplay,
                  window->xwindow);
      meta_error_trap_pop (window->display, FALSE);
    }

  meta_window_ungrab_keys (window);
  meta_display_ungrab_window_buttons (window->display, window->xwindow);
  meta_display_ungrab_focus_window_button (window->display, window);

  meta_display_unregister_x_window (window->display, window->xwindow);


  meta_error_trap_push (window->display);

  /* Put back anything we messed up */
  if (window->border_width != 0)
    XSetWindowBorderWidth (window->display->xdisplay,
                           window->xwindow,
                           window->border_width);

  /* No save set */
  XRemoveFromSaveSet (window->display->xdisplay,
                      window->xwindow);

  /* Don't get events on not-managed windows */
  XSelectInput (window->display->xdisplay,
                window->xwindow,
                NoEventMask);

  {
    unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 };
    XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits };

    XISelectEvents (window->display->xdisplay, window->xwindow, &mask, 1);
  }

  /* Stop getting events for the window's _NET_WM_USER_TIME_WINDOW too */
  if (window->user_time_window != None)
    {
      meta_display_unregister_x_window (window->display,
                                        window->user_time_window);
      XSelectInput (window->display->xdisplay,
                    window->user_time_window,
                    NoEventMask);
      window->user_time_window = None;
    }

  if (META_DISPLAY_HAS_SHAPE (window->display))
    XShapeSelectInput (window->display->xdisplay, window->xwindow, NoEventMask);

  meta_error_trap_pop (window->display, FALSE);

  if (window->icon)
    g_object_unref (G_OBJECT (window->icon));

  if (window->mini_icon)
    g_object_unref (G_OBJECT (window->mini_icon));

  if (window->frame_bounds)
    cairo_region_destroy (window->frame_bounds);

  meta_icon_cache_free (&window->icon_cache);

  g_free (window->sm_client_id);
  g_free (window->wm_client_machine);
  g_free (window->startup_id);
  g_free (window->role);
  g_free (window->res_class);
  g_free (window->res_name);
  g_free (window->title);
  g_free (window->icon_name);
  g_free (window->desc);
  g_free (window->gtk_theme_variant);
  g_free (window->flatpak_appid);
  g_free (window);
}

static void
set_wm_state (MetaWindow *window,
              int         state)
{
  unsigned long data[2];

  meta_verbose ("Setting wm state %s on %s\n",
                wm_state_to_string (state), window->desc);

  /* Metacity doesn't use icon windows, so data[1] should be None
   * according to the ICCCM 2.0 Section 4.1.3.1.
   */
  data[0] = state;
  data[1] = None;

  meta_error_trap_push (window->display);
  XChangeProperty (window->display->xdisplay, window->xwindow,
                   window->display->atom_WM_STATE,
                   window->display->atom_WM_STATE,
                   32, PropModeReplace, (guchar*) data, 2);
  meta_error_trap_pop (window->display, FALSE);
}

static void
set_net_wm_state (MetaWindow *window)
{
  int i;
  unsigned long data[13];

  i = 0;
  if (window->shaded)
    {
      data[i] = window->display->atom__NET_WM_STATE_SHADED;
      ++i;
    }
  if (window->wm_state_modal)
    {
      data[i] = window->display->atom__NET_WM_STATE_MODAL;
      ++i;
    }
  if (window->skip_pager)
    {
      data[i] = window->display->atom__NET_WM_STATE_SKIP_PAGER;
      ++i;
    }
  if (window->skip_taskbar)
    {
      data[i] = window->display->atom__NET_WM_STATE_SKIP_TASKBAR;
      ++i;
    }
  if (window->maximized_horizontally)
    {
      data[i] = window->display->atom__NET_WM_STATE_MAXIMIZED_HORZ;
      ++i;
    }
  if (window->maximized_vertically)
    {
      data[i] = window->display->atom__NET_WM_STATE_MAXIMIZED_VERT;
      ++i;
    }
  if (window->fullscreen)
    {
      data[i] = window->display->atom__NET_WM_STATE_FULLSCREEN;
      ++i;
    }
  if (!meta_window_showing_on_its_workspace (window) || window->shaded)
    {
      data[i] = window->display->atom__NET_WM_STATE_HIDDEN;
      ++i;
    }
  if (window->wm_state_above)
    {
      data[i] = window->display->atom__NET_WM_STATE_ABOVE;
      ++i;
    }
  if (window->wm_state_below)
    {
      data[i] = window->display->atom__NET_WM_STATE_BELOW;
      ++i;
    }
  if (window->wm_state_demands_attention)
    {
      data[i] = window->display->atom__NET_WM_STATE_DEMANDS_ATTENTION;
      ++i;
    }
  if (window->on_all_workspaces)
    {
      data[i] = window->display->atom__NET_WM_STATE_STICKY;
      ++i;
    }
  if (meta_window_appears_focused (window))
    {
      data[i] = window->display->atom__NET_WM_STATE_FOCUSED;
      ++i;
    }

  meta_verbose ("Setting _NET_WM_STATE with %d atoms\n", i);

  meta_error_trap_push (window->display);
  XChangeProperty (window->display->xdisplay, window->xwindow,
                   window->display->atom__NET_WM_STATE,
                   XA_ATOM,
                   32, PropModeReplace, (guchar*) data, i);
  meta_error_trap_pop (window->display, FALSE);

  if (window->fullscreen)
    {
      data[0] = window->fullscreen_monitors[0];
      data[1] = window->fullscreen_monitors[1];
      data[2] = window->fullscreen_monitors[2];
      data[3] = window->fullscreen_monitors[3];

      meta_verbose ("Setting _NET_WM_FULLSCREEN_MONITORS\n");
      meta_error_trap_push (window->display);
      XChangeProperty (window->display->xdisplay,
                       window->xwindow,
                       window->display->atom__NET_WM_FULLSCREEN_MONITORS,
                       XA_CARDINAL, 32, PropModeReplace,
                       (guchar*) data, 4);
      meta_error_trap_pop (window->display, FALSE);
    }
}

gboolean
meta_window_located_on_workspace (MetaWindow    *window,
                                  MetaWorkspace *workspace)
{
  return (window->on_all_workspaces && window->screen == workspace->screen) ||
    (window->workspace == workspace);
}

static gboolean
is_minimized_foreach (MetaWindow *window,
                      void       *data)
{
  gboolean *result = data;

  *result = window->minimized;
  if (*result)
    return FALSE; /* stop as soon as we find one */
  else
    return TRUE;
}

static gboolean
ancestor_is_minimized (MetaWindow *window)
{
  gboolean is_minimized;

  is_minimized = FALSE;

  meta_window_foreach_ancestor (window, is_minimized_foreach, &is_minimized);

  return is_minimized;
}

gboolean
meta_window_showing_on_its_workspace (MetaWindow *window)
{
  gboolean showing;
  gboolean is_desktop_or_dock;
  MetaWorkspace* workspace_of_window;

  showing = TRUE;

  /* 1. See if we're minimized */
  if (window->minimized)
    showing = FALSE;

  /* 2. See if we're in "show desktop" mode */
  is_desktop_or_dock = FALSE;
  is_desktop_or_dock_foreach (window,
                              &is_desktop_or_dock);

  meta_window_foreach_ancestor (window, is_desktop_or_dock_foreach,
                                &is_desktop_or_dock);

  if (window->on_all_workspaces)
    workspace_of_window = window->screen->active_workspace;
  else if (window->workspace)
    workspace_of_window = window->workspace;
  else /* This only seems to be needed for startup */
    workspace_of_window = NULL;

  if (showing &&
      workspace_of_window && workspace_of_window->showing_desktop &&
      !is_desktop_or_dock)
    {
      meta_verbose ("We're showing the desktop on the workspace(s) that window %s is on\n",
                    window->desc);
      showing = FALSE;
    }

  if (window->type != META_WINDOW_DOCK && window->display->hiding_windows_mode)
    {
      showing = FALSE;
    }

  /* 3. See if an ancestor is minimized (note that
   *    ancestor's "mapped" field may not be up to date
   *    since it's being computed in this same idle queue)
   */

  if (showing)
    {
      if (ancestor_is_minimized (window))
        showing = FALSE;
    }

#if 0
  /* 4. See if we're drawing wireframe
   */
  if (window->display->grab_window == window &&
      window->display->grab_wireframe_active)
    showing = FALSE;
#endif

  return showing;
}

gboolean
meta_window_should_be_showing (MetaWindow  *window)
{
  gboolean on_workspace;

  meta_verbose ("Should be showing for window %s\n", window->desc);

  /* See if we're on the workspace */
  on_workspace = meta_window_located_on_workspace (window,
                                                   window->screen->active_workspace);

  if (!on_workspace)
    meta_verbose ("Window %s is not on workspace %d\n",
                  window->desc,
                  meta_workspace_index (window->screen->active_workspace));
  else
    meta_verbose ("Window %s is on the active workspace %d\n",
                  window->desc,
                  meta_workspace_index (window->screen->active_workspace));

  if (window->on_all_workspaces)
    meta_verbose ("Window %s is on all workspaces\n", window->desc);

  return on_workspace && meta_window_showing_on_its_workspace (window);
}

static void
finish_minimize (gpointer data)
{
  MetaWindow *window = data;

  meta_window_hide (window);
  if (window->has_focus)
    {
      /* FIXME: It really sucks to put timestamp pinging here; it'd
       * probably make more sense in implement_showing() so that it's at
       * least not duplicated in meta_window_show; but since
       * finish_minimize is a callback making things just slightly icky, I
       * haven't done that yet.
       */
      guint32 timestamp = meta_display_get_current_time_roundtrip (window->display);
      meta_workspace_focus_default_window (window->screen->active_workspace,
                                           window,
                                           timestamp);
    }
}

static gboolean
client_window_should_be_mapped (MetaWindow *window)
{
  return !window->shaded;
}

static void
sync_client_window_mapped (MetaWindow *window)
{
  gboolean should_be_mapped = client_window_should_be_mapped (window);

  if (window->mapped == should_be_mapped)
    return;

  meta_verbose ("%s: should_be_mapped = %d\n", __func__, should_be_mapped);
  window->mapped = should_be_mapped;

  meta_error_trap_push (window->display);
  if (should_be_mapped)
    {
      XMapWindow (window->display->xdisplay, window->xwindow);
    }
  else
    {
      XUnmapWindow (window->display->xdisplay, window->xwindow);
      window->unmaps_pending ++;
    }
  meta_error_trap_pop (window->display, FALSE);
}

static void
implement_showing (MetaWindow *window,
                   gboolean    showing)
{
  /* Actually show/hide the window */
  meta_verbose ("Implement showing = %d for window %s\n",
                showing, window->desc);

  if (!showing)
    {
      /* When we manage a new window, we normally delay placing it
       * until it is is first shown, but if we're previewing hidden
       * windows we might want to know where they are on the screen,
       * so we should place the window even if we're hiding it rather
       * than showing it.
       */
      if (!window->placed)
        meta_window_force_placement (window);

      gboolean on_workspace;

      on_workspace = meta_window_located_on_workspace (window,
                                                       window->screen->active_workspace);

      /* Really this effects code should probably
       * be in meta_window_hide so the window->mapped
       * test isn't duplicated here. Anyhow, we animate
       * if we are mapped now, we are supposed to
       * be minimized, and we are on the current workspace.
       */
      if (on_workspace && window->minimized && window->mapped &&
          !meta_prefs_get_reduced_resources ())
        {
          MetaRectangle icon_rect, window_rect;
          gboolean result;

          /* Check if the window has an icon geometry */
          result = meta_window_get_icon_geometry (window, &icon_rect);

          if (!result)
            {
              /* just animate into the corner somehow - maybe
               * not a good idea...
               */
              icon_rect.x = window->screen->rect.width;
              icon_rect.y = window->screen->rect.height;
              icon_rect.width = 1;
              icon_rect.height = 1;
            }

          meta_window_get_outer_rect (window, &window_rect);

          finish_minimize (window);
          /*meta_effect_run_minimize (window,*/
                                    /*&window_rect,*/
                                    /*&icon_rect,*/
                                    /*finish_minimize,*/
                                    /*window);*/
        }
      else
        {
          finish_minimize (window);
        }
    }
  else
    {
      meta_window_show (window);
    }

  if (window->display->compositor)
    sync_client_window_mapped (window);
}

void meta_window_set_showing (MetaWindow *window, gboolean val)
{
  if (window->is_in_queues & META_QUEUE_CALC_SHOWING)
    {
      meta_window_unqueue (window, META_QUEUE_CALC_SHOWING);
    }
  implement_showing (window, val);
}

void
meta_window_calc_showing (MetaWindow  *window)
{
  implement_showing (window, meta_window_should_be_showing (window));
}

static guint queue_idle[NUMBER_OF_QUEUES] = {0, 0, 0};
static GSList *queue_pending[NUMBER_OF_QUEUES] = {NULL, NULL, NULL};

static int
stackcmp (gconstpointer a, gconstpointer b)
{
  MetaWindow *aw = (gpointer) a;
  MetaWindow *bw = (gpointer) b;

  if (aw->screen != bw->screen)
    return 0; /* don't care how they sort with respect to each other */
  else
    return meta_stack_windows_cmp (aw->screen->stack,
                                   aw, bw);
}

static gboolean
idle_calc_showing (gpointer data)
{
  GSList *tmp;
  GSList *copy;
  GSList *should_show;
  GSList *should_hide;
  GSList *unplaced;
  GSList *displays;
  MetaWindow *first_window;
  guint queue_index = GPOINTER_TO_INT (data);

  meta_topic (META_DEBUG_WINDOW_STATE,
              "Clearing the calc_showing queue\n");

  /* Work with a copy, for reentrancy. The allowed reentrancy isn't
   * complete; destroying a window while we're in here would result in
   * badness. But it's OK to queue/unqueue calc_showings.
   */
  copy = g_slist_copy (queue_pending[queue_index]);
  g_slist_free (queue_pending[queue_index]);
  queue_pending[queue_index] = NULL;
  queue_idle[queue_index] = 0;

  destroying_windows_disallowed += 1;

  /* We map windows from top to bottom and unmap from bottom to
   * top, to avoid extra expose events. The exception is
   * for unplaced windows, which have to be mapped from bottom to
   * top so placement works.
   */
  should_show = NULL;
  should_hide = NULL;
  unplaced = NULL;
  displays = NULL;

  tmp = copy;
  while (tmp != NULL)
    {
      MetaWindow *window;

      window = tmp->data;

      if (!window->placed)
        unplaced = g_slist_prepend (unplaced, window);
      else if (meta_window_should_be_showing (window))
        should_show = g_slist_prepend (should_show, window);
      else
        should_hide = g_slist_prepend (should_hide, window);

      tmp = tmp->next;
    }

  /* bottom to top */
  unplaced = g_slist_sort (unplaced, stackcmp);
  should_hide = g_slist_sort (should_hide, stackcmp);
  /* top to bottom */
  should_show = g_slist_sort (should_show, stackcmp);
  should_show = g_slist_reverse (should_show);

  first_window = copy->data;

  meta_display_grab (first_window->display);

  tmp = unplaced;
  while (tmp != NULL)
    {
      MetaWindow *window;

      window = tmp->data;

      meta_window_calc_showing (window);

      tmp = tmp->next;
    }

  tmp = should_show;
  while (tmp != NULL)
    {
      MetaWindow *window;

      window = tmp->data;

      implement_showing (window, TRUE);

      tmp = tmp->next;
    }

  tmp = should_hide;
  while (tmp != NULL)
    {
      MetaWindow *window;

      window = tmp->data;

      implement_showing (window, FALSE);

      tmp = tmp->next;
    }

  tmp = copy;
  while (tmp != NULL)
    {
      MetaWindow *window;

      window = tmp->data;

      /* important to set this here for reentrancy -
       * if we queue a window again while it's in "copy",
       * then queue_calc_showing will just return since
       * we are still in the calc_showing queue
       */
      window->is_in_queues &= ~META_QUEUE_CALC_SHOWING;

      tmp = tmp->next;
    }

  if (meta_prefs_get_focus_mode () != G_DESKTOP_FOCUS_MODE_CLICK)
    {
      /* When display->mouse_mode is false, we want to ignore
       * EnterNotify events unless they come from mouse motion.  To do
       * that, we set a sentinel property on the root window if we're
       * not in mouse_mode.
       */
      tmp = should_show;
      while (tmp != NULL)
        {
          MetaWindow *window = tmp->data;

          if (!window->display->mouse_mode)
            meta_display_increment_focus_sentinel (window->display);

          tmp = tmp->next;
        }
    }

  meta_display_ungrab (first_window->display);

  g_slist_free (copy);

  g_slist_free (unplaced);
  g_slist_free (should_show);
  g_slist_free (should_hide);
  g_slist_free (displays);

  destroying_windows_disallowed -= 1;

  return FALSE;
}

#ifdef WITH_VERBOSE_MODE
static const gchar* meta_window_queue_names[NUMBER_OF_QUEUES] =
  {"calc_showing", "move_resize", "update_icon"};
#endif

static void
meta_window_unqueue (MetaWindow *window, guint queuebits)
{
  gint queuenum;

  for (queuenum=0; queuenum<NUMBER_OF_QUEUES; queuenum++)
    {
      if ((queuebits & 1<<queuenum) /* they have asked to unqueue */
          &&
          (window->is_in_queues & 1<<queuenum)) /* it's in the queue */
        {

          meta_topic (META_DEBUG_WINDOW_STATE,
              "Removing %s from the %s queue\n",
              window->desc,
              meta_window_queue_names[queuenum]);

          /* Note that window may not actually be in the queue
           * because it may have been in "copy" inside the idle handler
           */
          queue_pending[queuenum] = g_slist_remove (queue_pending[queuenum], window);
          window->is_in_queues &= ~(1<<queuenum);

          /* Okay, so maybe we've used up all the entries in the queue.
           * In that case, we should kill the function that deals with
           * the queue, because there's nothing left for it to do.
           */
          if (queue_pending[queuenum] == NULL && queue_idle[queuenum] != 0)
            {
              g_source_remove (queue_idle[queuenum]);
              queue_idle[queuenum] = 0;
            }
        }
    }
}

static void
meta_window_flush_calc_showing (MetaWindow *window)
{
  if (window->is_in_queues & META_QUEUE_CALC_SHOWING)
    {
      meta_window_unqueue (window, META_QUEUE_CALC_SHOWING);
      meta_window_calc_showing (window);
    }
}

void
meta_window_queue (MetaWindow *window, guint queuebits)
{
  guint queuenum;

  for (queuenum=0; queuenum<NUMBER_OF_QUEUES; queuenum++)
    {
      if (queuebits & 1<<queuenum)
        {
          /* Data which varies between queues.
           * Yes, these do look a lot like associative arrays:
           * I seem to be turning into a Perl programmer.
           */

          const gint window_queue_idle_priority[NUMBER_OF_QUEUES] =
            {
              G_PRIORITY_DEFAULT_IDLE,  /* CALC_SHOWING */
              META_PRIORITY_RESIZE,     /* MOVE_RESIZE */
              G_PRIORITY_DEFAULT_IDLE   /* UPDATE_ICON */
            };

          const GSourceFunc window_queue_idle_handler[NUMBER_OF_QUEUES] =
            {
              idle_calc_showing,
              idle_move_resize,
              idle_update_icon,
            };

          /* If we're about to drop the window, there's no point in putting
           * it on a queue.
           */
          if (window->unmanaging)
            break;

          /* If the window already claims to be in that queue, there's no
           * point putting it in the queue.
           */
          if (window->is_in_queues & 1<<queuenum)
            break;

          meta_topic (META_DEBUG_WINDOW_STATE,
              "Putting %s in the %s queue\n",
              window->desc,
              meta_window_queue_names[queuenum]);

          /* So, mark it as being in this queue. */
          window->is_in_queues |= 1<<queuenum;

          /* There's not a lot of point putting things into a queue if
           * nobody's on the other end pulling them out. Therefore,
           * let's check to see whether an idle handler exists to do
           * that. If not, we'll create one.
           */

          if (queue_idle[queuenum] == 0)
            queue_idle[queuenum] = g_idle_add_full
              (
                window_queue_idle_priority[queuenum],
                window_queue_idle_handler[queuenum],
                GUINT_TO_POINTER(queuenum),
                NULL
              );

          /* And now we actually put it on the queue. */
          queue_pending[queuenum] = g_slist_prepend (queue_pending[queuenum],
                                                     window);
      }
  }
}

static gboolean
intervening_user_event_occurred (MetaWindow *window)
{
  guint32 compare;
  MetaWindow *focus_window;

  focus_window = window->display->focus_window;

  meta_topic (META_DEBUG_STARTUP,
              "COMPARISON:\n"
              "  net_wm_user_time_set : %d\n"
              "  net_wm_user_time     : %u\n"
              "  initial_timestamp_set: %d\n"
              "  initial_timestamp    : %u\n",
              window->net_wm_user_time_set,
              window->net_wm_user_time,
              window->initial_timestamp_set,
              window->initial_timestamp);
  if (focus_window != NULL)
    {
      meta_topic (META_DEBUG_STARTUP,
                  "COMPARISON (continued):\n"
                  "  focus_window             : %s\n"
                  "  fw->net_wm_user_time_set : %d\n"
                  "  fw->net_wm_user_time     : %u\n",
                  focus_window->desc,
                  focus_window->net_wm_user_time_set,
                  focus_window->net_wm_user_time);
    }

  /* We expect the most common case for not focusing a new window
   * to be when a hint to not focus it has been set.  Since we can
   * deal with that case rapidly, we use special case it--this is
   * merely a preliminary optimization.  :)
   */
  if ( ((window->net_wm_user_time_set == TRUE) &&
       (window->net_wm_user_time == 0))
      ||
       ((window->initial_timestamp_set == TRUE) &&
       (window->initial_timestamp == 0)))
    {
      meta_topic (META_DEBUG_STARTUP,
                  "window %s explicitly requested no focus\n",
                  window->desc);
      return TRUE;
    }

  if (!(window->net_wm_user_time_set) && !(window->initial_timestamp_set))
    {
      meta_topic (META_DEBUG_STARTUP,
                  "no information about window %s found\n",
                  window->desc);
      return FALSE;
    }

  if (focus_window != NULL &&
      !focus_window->net_wm_user_time_set)
    {
      meta_topic (META_DEBUG_STARTUP,
                  "focus window, %s, doesn't have a user time set yet!\n",
                  window->desc);
      return FALSE;
    }

  /* To determine the "launch" time of an application,
   * startup-notification can set the TIMESTAMP and the
   * application (usually via its toolkit such as gtk or qt) can
   * set the _NET_WM_USER_TIME.  If both are set, we need to be
   * using the newer of the two values.
   *
   * See http://bugzilla.gnome.org/show_bug.cgi?id=573922
   */
  compare = 0;
  if (window->net_wm_user_time_set &&
      window->initial_timestamp_set)
    compare =
      XSERVER_TIME_IS_BEFORE (window->net_wm_user_time,
                              window->initial_timestamp) ?
      window->initial_timestamp : window->net_wm_user_time;
  else if (window->net_wm_user_time_set)
    compare = window->net_wm_user_time;
  else if (window->initial_timestamp_set)
    compare = window->initial_timestamp;

  if ((focus_window != NULL) &&
      XSERVER_TIME_IS_BEFORE (compare, focus_window->net_wm_user_time))
    {
      meta_topic (META_DEBUG_STARTUP,
                  "window %s focus prevented by other activity; %u < %u\n",
                  window->desc,
                  compare,
                  focus_window->net_wm_user_time);
      return TRUE;
    }
  else
    {
      meta_topic (META_DEBUG_STARTUP,
                  "new window %s with no intervening events\n",
                  window->desc);
      return FALSE;
    }
}

/* This function is an ugly hack.  It's experimental in nature and ought to be
 * replaced by a real hint from the app to the WM if we decide the experimental
 * behavior is worthwhile.  The basic idea is to get more feedback about how
 * usage scenarios of "strict" focus users and what they expect.  See #326159.
 */
gboolean
__window_is_terminal (MetaWindow *window)
{
  if (window == NULL || window->res_class == NULL)
    return FALSE;

  /*
   * Compare res_class, which is not user-settable, and thus theoretically
   * a more-reliable indication of term-ness.
   */

  /* gnome-terminal -- if you couldn't guess */
  if (strcmp (window->res_class, "Gnome-terminal") == 0)
    return TRUE;
  /* xterm, rxvt, aterm */
  else if (strcmp (window->res_class, "XTerm") == 0)
    return TRUE;
  /* konsole, KDE's terminal program */
  else if (strcmp (window->res_class, "Konsole") == 0)
    return TRUE;
  /* rxvt-unicode */
  else if (strcmp (window->res_class, "URxvt") == 0)
    return TRUE;
  /* eterm */
  else if (strcmp (window->res_class, "Eterm") == 0)
    return TRUE;
  /* KTerm -- some terminal not KDE based; so not like Konsole */
  else if (strcmp (window->res_class, "KTerm") == 0)
    return TRUE;
  /* Multi-gnome-terminal */
  else if (strcmp (window->res_class, "Multi-gnome-terminal") == 0)
    return TRUE;
  /* mlterm ("multi lingual terminal emulator on X") */
  else if (strcmp (window->res_class, "mlterm") == 0)
    return TRUE;
  /* Terminal -- XFCE Terminal */
  else if (strcmp (window->res_class, "Terminal") == 0)
    return TRUE;

  return FALSE;
}

/* This function determines what state the window should have assuming that it
 * and the focus_window have no relation
 */
static void
window_state_on_map (MetaWindow *window,
                     gboolean *takes_focus,
                     gboolean *places_on_top)
{
  gboolean intervening_events;

  intervening_events = intervening_user_event_occurred (window);

  *takes_focus = !intervening_events;
  *places_on_top = *takes_focus;

  /* don't initially focus windows that are intended to not accept
   * focus
   */
  if (!(window->input || window->take_focus))
    {
      *takes_focus = FALSE;
      return;
    }

  /* Terminal usage may be different; some users intend to launch
   * many apps in quick succession or to just view things in the new
   * window while still interacting with the terminal.  In that case,
   * apps launched from the terminal should not take focus.  This
   * isn't quite the same as not allowing focus to transfer from
   * terminals due to new window map, but the latter is a much easier
   * approximation to enforce so we do that.
   */
  if (*takes_focus &&
      meta_prefs_get_focus_new_windows () == G_DESKTOP_FOCUS_NEW_WINDOWS_STRICT &&
      !window->display->allow_terminal_deactivation &&
      __window_is_terminal (window->display->focus_window) &&
      !meta_window_is_ancestor_of_transient (window->display->focus_window,
                                             window))
    {
      meta_topic (META_DEBUG_FOCUS,
                  "focus_window is terminal; not focusing new window.\n");
      *takes_focus = FALSE;
      *places_on_top = FALSE;
    }

  switch (window->type)
    {
    case META_WINDOW_UTILITY:
    case META_WINDOW_TOOLBAR:
      *takes_focus = FALSE;
      *places_on_top = FALSE;
      break;
    case META_WINDOW_DOCK:
    case META_WINDOW_DESKTOP:
    case META_WINDOW_SPLASHSCREEN:
    case META_WINDOW_MENU:
      /* don't focus any of these; places_on_top may be irrelevant for some of
       * these (e.g. dock)--but you never know--the focus window might also be
       * of the same type in some weird situation...
       */
      *takes_focus = FALSE;
      break;
    case META_WINDOW_NORMAL:
    case META_WINDOW_DIALOG:
    case META_WINDOW_MODAL_DIALOG:
      /* The default is correct for these */
      break;
    default:
      break;
    }
}

static gboolean
windows_overlap (const MetaWindow *w1, const MetaWindow *w2)
{
  MetaRectangle w1rect, w2rect;

  if (w1->minimized || w2->minimized)
    return FALSE;

  meta_window_get_outer_rect (w1, &w1rect);
  meta_window_get_outer_rect (w2, &w2rect);
  return meta_rectangle_overlap (&w1rect, &w2rect);
}

/* Returns whether a new window would be covered by any
 * existing window on the same workspace that is set
 * to be "above" ("always on top").  A window that is not
 * set "above" would be underneath the new window anyway.
 *
 * We take "covered" to mean even partially covered, but
 * some people might prefer entirely covered.  I think it
 * is more useful to behave this way if any part of the
 * window is covered, because a partial coverage could be
 * (say) ninety per cent and almost indistinguishable from total.
 */
static gboolean
window_would_be_covered (const MetaWindow *newbie)
{
  MetaWorkspace *workspace = newbie->workspace;
  GList *tmp, *windows;

  windows = meta_workspace_list_windows (workspace);

  tmp = windows;
  while (tmp != NULL)
    {
      MetaWindow *w = tmp->data;

      if (w->wm_state_above && w != newbie)
        {
          /* We have found a window that is "above". Perhaps it overlaps. */
          if (windows_overlap (w, newbie))
            {
              g_list_free (windows); /* clean up... */
              return TRUE; /* yes, it does */
            }
        }

      tmp = tmp->next;
    }

  g_list_free (windows);
  return FALSE; /* none found */
}

static void
meta_window_force_placement (MetaWindow *window)
{
  if (window->placed)
    return;

  meta_topic (META_DEBUG_PLACEMENT, "force placement\n");

  /* We have to recalc the placement here since other windows may
   * have been mapped/placed since we last did constrain_position
   */

  /* calc_placement is an efficiency hack to avoid
   * multiple placement calculations before we finally
   * show the window.
   */
  window->calc_placement = TRUE;
  meta_window_move_resize_now (window);
  window->calc_placement = FALSE;

  /* don't ever do the initial position constraint thing again.
   * This is toggled here so that initially-iconified windows
   * still get placed when they are ultimately shown.
   */
  window->placed = TRUE;

  /* Don't want to accidentally reuse the fact that we had been denied
   * focus in any future constraints unless we're denied focus again.
   */
  window->denied_focus_and_not_transient = FALSE;
}

static inline gboolean _is_wine_window(MetaWindow* window)
{
    return (window->res_class && g_ascii_strncasecmp(window->res_class, "wine", 4) == 0);
}

/* XXX META_EFFECT_*_MAP */
void
meta_window_show (MetaWindow *window)
{
  gboolean did_show;
  gboolean takes_focus_on_map;
  gboolean place_on_top_on_map;
  gboolean needs_stacking_adjustment;
  gboolean will_be_covered;
  MetaWindow *focus_window;
  guint32     timestamp;

  /* FIXME: It really sucks to put timestamp pinging here; it'd
   * probably make more sense in implement_showing() so that it's at
   * least not duplicated in finish_minimize.  *shrug*
   */
  timestamp = meta_display_get_current_time_roundtrip (window->display);

  meta_topic (META_DEBUG_WINDOW_STATE,
              "Showing window %s, shaded: %d iconic: %d placed: %d\n",
              window->desc, window->shaded, window->iconic, window->placed);

  focus_window = window->display->focus_window;  /* May be NULL! */
  did_show = FALSE;
  window_state_on_map (window, &takes_focus_on_map, &place_on_top_on_map);
  needs_stacking_adjustment = FALSE;
  will_be_covered = window_would_be_covered (window);

  meta_topic (META_DEBUG_WINDOW_STATE,
              "Window %s %s focus on map, and %s place on top on map.\n",
              window->desc,
              takes_focus_on_map ? "does" : "does not",
              place_on_top_on_map ? "does" : "does not");

  /* Now, in some rare cases we should *not* put a new window on top.
   * These cases include certain types of windows showing for the first
   * time, and any window which would be covered because of another window
   * being set "above" ("always on top").
   *
   * FIXME: Although "place_on_top_on_map" and "takes_focus_on_map" are
   * generally based on the window type, there is a special case when the
   * focus window is a terminal for them both to be false; this should
   * probably rather be a term in the "if" condition below.
   */

  if ( focus_window != NULL && window->showing_for_first_time &&
      ( (!place_on_top_on_map && !takes_focus_on_map) ||
      will_be_covered )
    ) {
      if (meta_window_is_ancestor_of_transient (focus_window, window) &&
              !_is_wine_window(focus_window))
        {
          /* This happens for error dialogs or alerts; these need to remain on
           * top, but it would be confusing to have its ancestor remain
           * focused.
           */
          meta_topic (META_DEBUG_STARTUP,
                      "The focus window %s is an ancestor of the newly mapped "
                      "window %s which isn't being focused.  Unfocusing the "
                      "ancestor.\n",
                      focus_window->desc, window->desc);

          meta_display_focus_the_no_focus_window (window->display,
                                                  window->screen,
                                                  timestamp);
        }
      else
        {
          needs_stacking_adjustment = TRUE;
          if (!window->placed)
            window->denied_focus_and_not_transient = TRUE;
        }
    }

  if (!window->placed)
    {
      /* We have to recalc the placement here since other windows may
       * have been mapped/placed since we last did constrain_position
       */

      /* calc_placement is an efficiency hack to avoid
       * multiple placement calculations before we finally
       * show the window.
       */
      window->calc_placement = TRUE;
      meta_window_move_resize_now (window);
      window->calc_placement = FALSE;

      /* don't ever do the initial position constraint thing again.
       * This is toggled here so that initially-iconified windows
       * still get placed when they are ultimately shown.
       */
      window->placed = TRUE;

      /* Don't want to accidentally reuse the fact that we had been denied
       * focus in any future constraints unless we're denied focus again.
       */
      window->denied_focus_and_not_transient = FALSE;
    }

  if (needs_stacking_adjustment)
    {
      gboolean overlap;

      /* This window isn't getting focus on map.  We may need to do some
       * special handing with it in regards to
       *   - the stacking of the window
       *   - the MRU position of the window
       *   - the demands attention setting of the window
       *
       * Firstly, set the flag so we don't give the window focus anyway
       * and confuse people.
       */

      takes_focus_on_map = FALSE;

      overlap = windows_overlap (window, focus_window);

      /* We want alt tab to go to the denied-focus window */
      ensure_mru_position_after (window, focus_window);

      /* We don't want the denied-focus window to obscure the focus
       * window, and if we're in both click-to-focus mode and
       * raise-on-click mode then we want to maintain the invariant
       * that MRU order == stacking order.  The need for this if
       * comes from the fact that in sloppy/mouse focus the focus
       * window may not overlap other windows and also can be
       * considered "below" them; this combination means that
       * placing the denied-focus window "below" the focus window
       * in the stack when it doesn't overlap it confusingly places
       * that new window below a lot of other windows.
       */
      if (!will_be_covered && (overlap ||
          (meta_prefs_get_focus_mode () == G_DESKTOP_FOCUS_MODE_CLICK &&
           meta_prefs_get_raise_on_click ())))
        meta_window_stack_just_below (window, focus_window);

      /* If the window will be obscured by the focus window or a window set to
       * always on top, then the user might not notice the window appearing so
       * set the demands attention hint.
       *
       * We set the hint ourselves rather than calling
       * meta_window_set_demands_attention() because that would cause
       * a recalculation of overlap, and a call to set_net_wm_state()
       * which we are going to call ourselves here a few lines down.
       */
      if (overlap || will_be_covered)
        window->wm_state_demands_attention = TRUE;
    }

  /* Shaded means the frame is mapped but the window is not */

  if (window->frame && !window->frame->mapped)
    {
      meta_topic (META_DEBUG_WINDOW_STATE,
                  "Frame actually needs map\n");
      window->frame->mapped = TRUE;
      meta_ui_map_frame (window->screen->ui, window->frame->xwindow);
      did_show = TRUE;
    }

  if (window->shaded)
    {
      if (window->mapped)
        {
          meta_topic (META_DEBUG_WINDOW_STATE,
                      "%s actually needs unmap (shaded)\n", window->desc);
          meta_topic (META_DEBUG_WINDOW_STATE,
                      "Incrementing unmaps_pending on %s for shade\n",
                      window->desc);
          window->mapped = FALSE;
          window->unmaps_pending += 1;
          meta_error_trap_push (window->display);
          XUnmapWindow (window->display->xdisplay, window->xwindow);
          meta_error_trap_pop (window->display, FALSE);
        }

      if (!window->iconic)
        {
          window->iconic = TRUE;
          set_wm_state (window, IconicState);
        }
    }
  else
    {
      if (!window->mapped)
        {
          meta_topic (META_DEBUG_WINDOW_STATE,
                      "%s actually needs map\n", window->desc);
          window->mapped = TRUE;
          meta_error_trap_push (window->display);
          XMapWindow (window->display->xdisplay, window->xwindow);
          meta_error_trap_pop (window->display, FALSE);
          did_show = TRUE;

          if (window->was_minimized)
            {
              MetaRectangle window_rect;
              MetaRectangle icon_rect;

              window->was_minimized = FALSE;

              if (meta_window_get_icon_geometry (window, &icon_rect))
                {
                  meta_window_get_outer_rect (window, &window_rect);

                  meta_effect_run_unminimize (window,
                                              &window_rect,
                                              &icon_rect,
                                              NULL, NULL);
                }
            }
        } 

      if (window->display->compositor) 
        {
          if (window->hidden)
            {
              meta_stack_freeze (window->screen->stack);
              window->hidden = FALSE;
              meta_stack_thaw (window->screen->stack);
              did_show = TRUE;
            }
        }
      else
        {
          window->hidden = FALSE;
        }

      if (window->iconic)
        {
          window->iconic = FALSE;
          set_wm_state (window, NormalState);
        }
    }

  /* We don't want to worry about all cases from inside
   * implement_showing(); we only want to worry about focus if this
   * window has not been shown before.
   */
  if (window->showing_for_first_time)
    {
      window->showing_for_first_time = FALSE;
      if (takes_focus_on_map)
        {
          meta_window_focus (window, timestamp);
        }
      else
        {
          /* Prevent EnterNotify events in sloppy/mouse focus from
           * erroneously focusing the window that had been denied
           * focus.  FIXME: This introduces a race; I have a couple
           * ideas for a better way to accomplish the same thing, but
           * they're more involved so do it this way for now.
           */
          meta_display_increment_focus_sentinel (window->display);
        }
    }

  set_net_wm_state (window);

  if (did_show && window->struts)
    {
      meta_topic (META_DEBUG_WORKAREA,
                  "Mapped window %s with struts, so invalidating work areas\n",
                  window->desc);
      invalidate_work_areas (window);
    }

  /*
   * Now that we have shown the window, we no longer want to consider the
   * initial timestamp in any subsequent deliberations whether to focus this
   * window or not, so clear the flag.
   *
   * See http://bugzilla.gnome.org/show_bug.cgi?id=573922
   */
  window->initial_timestamp_set = FALSE;
}

/* XXX META_EFFECT_*_UNMAP */
static void
meta_window_hide (MetaWindow *window)
{
  gboolean did_hide;

  meta_topic (META_DEBUG_WINDOW_STATE,
              "Hiding window %s\n", window->desc);

  did_hide = FALSE;

  if (!window->display->compositor)
    {
      if (window->frame && window->frame->mapped)
        {
          meta_topic (META_DEBUG_WINDOW_STATE, "Frame actually needs unmap\n");
          window->frame->mapped = FALSE;
          meta_ui_unmap_frame (window->screen->ui, window->frame->xwindow);
          did_hide = TRUE;
        }

      if (window->mapped)
        {
          meta_topic (META_DEBUG_WINDOW_STATE,
                      "%s actually needs unmap\n", window->desc);
          meta_topic (META_DEBUG_WINDOW_STATE,
                      "Incrementing unmaps_pending on %s for hide\n",
                      window->desc);
          window->mapped = FALSE;
          window->unmaps_pending += 1;
          meta_error_trap_push (window->display);
          XUnmapWindow (window->display->xdisplay, window->xwindow);
          meta_error_trap_pop (window->display, FALSE);
          did_hide = TRUE;
        }

      window->hidden = TRUE;
    }
  else 
    {
      if (!window->hidden)
        {
          meta_stack_freeze (window->screen->stack);
          window->hidden = TRUE;
          meta_stack_thaw (window->screen->stack);
        }
    }

  if (!window->iconic)
    {
      window->iconic = TRUE;
      set_wm_state (window, IconicState);
    }

  set_net_wm_state (window);

  if (did_hide && window->struts)
    {
      meta_topic (META_DEBUG_WORKAREA,
                  "Unmapped window %s with struts, so invalidating work areas\n",
                  window->desc);
      invalidate_work_areas (window);
    }
}

static gboolean
queue_calc_showing_func (MetaWindow *window,
                         void       *data)
{
  meta_window_queue(window, META_QUEUE_CALC_SHOWING);
  return TRUE;
}

void
meta_window_minimize (MetaWindow  *window)
{
  if (!window->minimized)
    {
      window->minimized = TRUE;
      meta_window_queue(window, META_QUEUE_CALC_SHOWING);

      meta_window_foreach_transient (window,
                                     queue_calc_showing_func,
                                     NULL);

      if (window->has_focus)
        {
          meta_topic (META_DEBUG_FOCUS,
                      "Focusing default window due to minimization of focus window %s\n",
                      window->desc);
        }
      else
        {
          meta_topic (META_DEBUG_FOCUS,
                      "Minimizing window %s which doesn't have the focus\n",
                      window->desc);
        }
    }
}

void
meta_window_unminimize (MetaWindow  *window)
{
  if (window->minimized)
    {
      window->minimized = FALSE;
      window->was_minimized = TRUE;
      meta_window_queue(window, META_QUEUE_CALC_SHOWING);

      meta_window_foreach_transient (window,
                                     queue_calc_showing_func,
                                     NULL);
    }
}

static void
ensure_size_hints_satisfied (MetaRectangle    *rect,
                             const XSizeHints *size_hints)
{
  int minw, minh, maxw, maxh;   /* min/max width/height                      */
  int basew, baseh, winc, hinc; /* base width/height, width/height increment */
  int extra_width, extra_height;

  minw  = size_hints->min_width;  minh  = size_hints->min_height;
  maxw  = size_hints->max_width;  maxh  = size_hints->max_height;
  basew = size_hints->base_width; baseh = size_hints->base_height;
  winc  = size_hints->width_inc;  hinc  = size_hints->height_inc;

  /* First, enforce min/max size constraints */
  rect->width  = CLAMP (rect->width,  minw, maxw);
  rect->height = CLAMP (rect->height, minh, maxh);

  /* Now, verify size increment constraints are satisfied, or make them be */
  extra_width  = (rect->width  - basew) % winc;
  extra_height = (rect->height - baseh) % hinc;

  rect->width  -= extra_width;
  rect->height -= extra_height;

  /* Adjusting width/height down, as done above, may violate minimum size
   * constraints, so one last fix.
   */
  if (rect->width  < minw)
    rect->width  += ((minw - rect->width)/winc  + 1)*winc;
  if (rect->height < minh)
    rect->height += ((minh - rect->height)/hinc + 1)*hinc;
}

static void
meta_window_save_rect (MetaWindow *window)
{
  if (!(META_WINDOW_MAXIMIZED (window) || META_WINDOW_TILED_SIDE_BY_SIDE (window) || window->fullscreen))
    {
      /* save size/pos as appropriate args for move_resize */
      if (!window->maximized_horizontally)
        {
          window->saved_rect.x      = window->rect.x;
          window->saved_rect.width  = window->rect.width;
          if (window->frame)
            window->saved_rect.x   += window->frame->rect.x;
        }
      if (!window->maximized_vertically)
        {
          window->saved_rect.y      = window->rect.y;
          window->saved_rect.height = window->rect.height;
          if (window->frame)
            window->saved_rect.y   += window->frame->rect.y;
        }
    }
}

/**
 * Save the user_rect regardless of whether the window is maximized or
 * fullscreen. See save_user_window_placement() for most uses.
 *
 * \param window  Store current position of this window for future reference
 */
static void
force_save_user_window_placement (MetaWindow *window)
{
  meta_window_get_client_root_coords (window, &window->user_rect);
}

/**
 * Save the user_rect, but only if the window is neither maximized nor
 * fullscreen, otherwise the window may snap back to those dimensions
 * (bug #461927).
 *
 * \param window  Store current position of this window for future reference
 */
static void
save_user_window_placement (MetaWindow *window)
{
  if (!(META_WINDOW_MAXIMIZED (window) || META_WINDOW_TILED_SIDE_BY_SIDE (window) || window->fullscreen))
    {
      MetaRectangle user_rect;

      meta_window_get_client_root_coords (window, &user_rect);

      if (!window->maximized_horizontally)
	{
	  window->user_rect.x     = user_rect.x;
	  window->user_rect.width = user_rect.width;
	}
      if (!window->maximized_vertically)
	{
	  window->user_rect.y      = user_rect.y;
	  window->user_rect.height = user_rect.height;
	}
    }
}

void
meta_window_maximize_internal (MetaWindow        *window,
                               MetaMaximizeFlags  directions,
                               MetaRectangle     *saved_rect)
{
  /* At least one of the two directions ought to be set */
  gboolean maximize_horizontally, maximize_vertically;
  maximize_horizontally = directions & META_MAXIMIZE_HORIZONTAL;
  maximize_vertically   = directions & META_MAXIMIZE_VERTICAL;
  g_assert (maximize_horizontally || maximize_vertically);

  meta_topic (META_DEBUG_WINDOW_OPS,
              "Maximizing %s%s\n",
              window->desc,
              maximize_horizontally && maximize_vertically ? "" :
                maximize_horizontally ? " horizontally" :
                  maximize_vertically ? " vertically" : "BUGGGGG");

  if (saved_rect != NULL)
    window->saved_rect = *saved_rect;
  else
    meta_window_save_rect (window);

  if (maximize_horizontally && maximize_vertically)
    window->saved_maximize = TRUE;

  window->maximized_horizontally =
    window->maximized_horizontally || maximize_horizontally;
  window->maximized_vertically =
    window->maximized_vertically   || maximize_vertically;
  if (maximize_horizontally || maximize_vertically)
    window->force_save_user_rect = FALSE;

  /* Fix for #336850: If the frame shape isn't reapplied, it is
   * possible that the frame will retains its rounded corners. That
   * happens if the client's size when maximized equals the unmaximized
   * size.
   */
  if (window->frame)
    window->frame->need_reapply_frame_shape = TRUE;

  recalc_window_features (window);
  set_net_wm_state (window);
}

void
meta_window_maximize (MetaWindow        *window,
                      MetaMaximizeFlags  directions)
{
  MetaRectangle *saved_rect = NULL;

  /* At least one of the two directions ought to be set */
  gboolean maximize_horizontally, maximize_vertically;
  maximize_horizontally = directions & META_MAXIMIZE_HORIZONTAL;
  maximize_vertically   = directions & META_MAXIMIZE_VERTICAL;
  g_assert (maximize_horizontally || maximize_vertically);

  /* Only do something if the window isn't already maximized in the
   * given direction(s).
   */
  if ((maximize_horizontally && !window->maximized_horizontally) ||
      (maximize_vertically   && !window->maximized_vertically))
    {
      if (window->shaded && maximize_vertically)
        {
          /* Shading sucks anyway; I'm not adding a timestamp argument
           * to this function just for this niche usage & corner case.
           */
          guint32 timestamp =
            meta_display_get_current_time_roundtrip (window->display);
          meta_window_unshade (window, timestamp);
        }

      /* if the window hasn't been placed yet, we'll maximize it then
       */
      if (!window->placed)
        {
          window->maximize_horizontally_after_placement = window->maximize_horizontally_after_placement || maximize_horizontally;
          window->maximize_vertically_after_placement = window->maximize_vertically_after_placement || maximize_vertically;
          return;
        }

      if (window->tile_mode != META_TILE_NONE)
        {
          saved_rect = &window->saved_rect;
          window->maximized_vertically = FALSE;
        }

      meta_window_maximize_internal (window,
                                     directions,
                                     saved_rect);

      /* move_resize with new maximization constraints
       */
      meta_window_queue(window, META_QUEUE_MOVE_RESIZE);

      meta_compositor_maximize_window (window->display->compositor, window);
    }
}

static void
unmaximize_window_before_freeing (MetaWindow        *window)
{
  meta_topic (META_DEBUG_WINDOW_OPS,
              "Unmaximizing %s just before freeing\n",
              window->desc);

  window->maximized_horizontally = FALSE;
  window->maximized_vertically = FALSE;

  if (window->withdrawn)                /* See bug #137185 */
    {
      window->rect = window->saved_rect;
      set_net_wm_state (window);
    }
  else if (window->screen->closing)     /* See bug #358042 */
    {
      /* Do NOT update net_wm_state: this screen is closing,
       * it likely will be managed by another window manager
       * that will need the current _NET_WM_STATE atoms.
       * Moreover, it will need to know the unmaximized geometry,
       * therefore move_resize the window to saved_rect here
       * before closing it. */
      meta_window_move_resize (window,
                               FALSE,
                               window->saved_rect.x,
                               window->saved_rect.y,
                               window->saved_rect.width,
                               window->saved_rect.height);
    }
}

void
meta_window_tile (MetaWindow *window)
{
  /* Don't do anything if no tiling is requested */
  if (window->tile_mode == META_TILE_NONE)
    return;

  meta_window_maximize_internal (window, META_MAXIMIZE_VERTICAL, NULL);

  /* move_resize with new tiling constraints */
  meta_window_queue (window, META_QUEUE_MOVE_RESIZE);
}

static gboolean
meta_window_can_tile_maximized (MetaWindow *window)
{
  return window->has_maximize_func;
}

gboolean
meta_window_can_tile_side_by_side (MetaWindow *window)
{
  const MetaXineramaScreenInfo *monitor;
  MetaRectangle tile_area;

  /*if (!META_WINDOW_ALLOWS_RESIZE (window))*/
  if (!meta_window_can_tile_maximized (window))
    return FALSE;

  monitor = meta_screen_get_current_xinerama (window->screen);
  meta_window_get_work_area_for_xinerama (window, monitor->number, &tile_area);

  /* Do not allow tiling in portrait orientation */
  if (tile_area.height > tile_area.width)
    return FALSE;

  tile_area.width /= 2;

  if (window->frame)
    {
      MetaFrameBorders borders;

      meta_frame_calc_borders (window->frame, &borders);

      tile_area.width -= (borders.visible.left + borders.visible.right);
      tile_area.height -= (borders.visible.top + borders.visible.bottom);
    }

  return tile_area.width >= window->size_hints.min_width &&
         tile_area.height >= window->size_hints.min_height;
}

void
meta_window_unmaximize (MetaWindow        *window,
                        MetaMaximizeFlags  directions)
{
  /* At least one of the two directions ought to be set */
  gboolean unmaximize_horizontally, unmaximize_vertically;

  /* Restore tiling if necessary */
  if (window->tile_mode == META_TILE_LEFT ||
      window->tile_mode == META_TILE_RIGHT)
    {
      window->maximized_horizontally = FALSE;
      meta_window_tile (window);
      return;
    }

  unmaximize_horizontally = directions & META_MAXIMIZE_HORIZONTAL;
  unmaximize_vertically   = directions & META_MAXIMIZE_VERTICAL;
  g_assert (unmaximize_horizontally || unmaximize_vertically);

  if (unmaximize_horizontally && unmaximize_vertically)
    window->saved_maximize = FALSE;

  /* Only do something if the window isn't already maximized in the
   * given direction(s).
   */
  if ((unmaximize_horizontally && window->maximized_horizontally) ||
      (unmaximize_vertically   && window->maximized_vertically))
    {
      MetaRectangle target_rect;

      meta_topic (META_DEBUG_WINDOW_OPS,
                  "Unmaximizing %s%s\n",
                  window->desc,
                  unmaximize_horizontally && unmaximize_vertically ? "" :
                    unmaximize_horizontally ? " horizontally" :
                      unmaximize_vertically ? " vertically" : "BUGGGGG");

      window->maximized_horizontally =
        window->maximized_horizontally && !unmaximize_horizontally;
      window->maximized_vertically =
        window->maximized_vertically   && !unmaximize_vertically;

      /* Unmaximize to the saved_rect position in the direction(s)
       * being unmaximized.
       */
      meta_window_get_client_root_coords (window, &target_rect);
      if (unmaximize_horizontally)
        {
          target_rect.x     = window->saved_rect.x;
          target_rect.width = window->saved_rect.width;
        }
      if (unmaximize_vertically)
        {
          target_rect.y      = window->saved_rect.y;
          target_rect.height = window->saved_rect.height;
        }

      /* Window's size hints may have changed while maximized, making
       * saved_rect invalid.  #329152
       */
      ensure_size_hints_satisfied (&target_rect, &window->size_hints);

      meta_window_move_resize (window,
                               FALSE,
                               target_rect.x,
                               target_rect.y,
                               target_rect.width,
                               target_rect.height);

      /* Make sure user_rect is current.
       */
      force_save_user_window_placement (window);

      /* When we unmaximize, if we're doing a mouse move also we could
       * get the window suddenly jumping to the upper left corner of
       * the workspace, since that's where it was when the grab op
       * started. So we need to update the grab state. We have to do
       * it after the actual operation, as the window may have been moved
       * by constraints.
       */
      if (meta_grab_op_is_moving (window->display->grab_op) &&
          window->display->grab_window == window)
        {
          window->display->grab_anchor_window_pos = window->user_rect;
        }

      if (window->display->grab_wireframe_active)
        {
          window->display->grab_wireframe_rect = target_rect;
        }

      recalc_window_features (window);
      set_net_wm_state (window);

      meta_compositor_unmaximize_window (window->display->compositor, window);
    }
}

void
meta_window_make_above (MetaWindow  *window)
{
  window->wm_state_above = TRUE;
  meta_window_update_layer (window);
  meta_window_raise (window);
  set_net_wm_state (window);
  deepin_message_hub_window_above_state_changed(window, TRUE);
}

void
meta_window_unmake_above (MetaWindow  *window)
{
  window->wm_state_above = FALSE;
  meta_window_raise (window);
  meta_window_update_layer (window);
  set_net_wm_state (window);
  deepin_message_hub_window_above_state_changed(window, FALSE);
}

void
meta_window_make_fullscreen_internal (MetaWindow  *window)
{
  if (!window->fullscreen)
    {
      meta_topic (META_DEBUG_WINDOW_OPS,
                  "Fullscreening %s\n", window->desc);

      if (window->shaded)
        {
          /* Shading sucks anyway; I'm not adding a timestamp argument
           * to this function just for this niche usage & corner case.
           */
          guint32 timestamp =
            meta_display_get_current_time_roundtrip (window->display);
          meta_window_unshade (window, timestamp);
        }

      meta_window_save_rect (window);

      window->fullscreen = TRUE;
      window->force_save_user_rect = FALSE;

      meta_stack_freeze (window->screen->stack);
      meta_window_update_layer (window);

      meta_window_raise (window);
      meta_stack_thaw (window->screen->stack);

      recalc_window_features (window);
      set_net_wm_state (window);
    }
}

void
meta_window_make_fullscreen (MetaWindow  *window)
{
  if (!window->fullscreen)
    {
      meta_window_make_fullscreen_internal (window);
      /* move_resize with new constraints
       */
      meta_window_queue(window, META_QUEUE_MOVE_RESIZE);
    }
}

void
meta_window_unmake_fullscreen (MetaWindow  *window)
{
  if (window->fullscreen)
    {
      MetaRectangle target_rect;

      meta_topic (META_DEBUG_WINDOW_OPS,
                  "Unfullscreening %s\n", window->desc);

      window->fullscreen = FALSE;
      target_rect = window->saved_rect;

      /* Window's size hints may have changed while maximized, making
       * saved_rect invalid.  #329152
       */
      ensure_size_hints_satisfied (&target_rect, &window->size_hints);

      /* Need to update window->has_resize_func before we move_resize()
       */
      recalc_window_features (window);
      set_net_wm_state (window);

      meta_window_move_resize (window,
                               FALSE,
                               target_rect.x,
                               target_rect.y,
                               target_rect.width,
                               target_rect.height);

      /* Make sure user_rect is current.
       */
      force_save_user_window_placement (window);

      meta_window_update_layer (window);
    }
}

void
meta_window_update_fullscreen_monitors (MetaWindow    *window,
                                        unsigned long  top,
                                        unsigned long  bottom,
                                        unsigned long  left,
                                        unsigned long  right)
{
  if ((int)top < window->screen->n_xinerama_infos &&
      (int)bottom < window->screen->n_xinerama_infos &&
      (int)left < window->screen->n_xinerama_infos &&
      (int)right < window->screen->n_xinerama_infos)
    {
      window->fullscreen_monitors[0] = top;
      window->fullscreen_monitors[1] = bottom;
      window->fullscreen_monitors[2] = left;
      window->fullscreen_monitors[3] = right;
    }
  else
    {
      window->fullscreen_monitors[0] = -1;
    }

  if (window->fullscreen)
    {
      meta_window_queue(window, META_QUEUE_MOVE_RESIZE);
    }
}

void
meta_window_shade (MetaWindow  *window,
                   guint32      timestamp)
{
  meta_topic (META_DEBUG_WINDOW_OPS,
              "Shading %s\n", window->desc);
  if (!window->shaded)
    {
      window->shaded = TRUE;

      meta_window_queue(window, META_QUEUE_MOVE_RESIZE | META_QUEUE_CALC_SHOWING);

      /* After queuing the calc showing, since _focus flushes it,
       * and we need to focus the frame
       */
      meta_topic (META_DEBUG_FOCUS,
                  "Re-focusing window %s after shading it\n",
                  window->desc);
      meta_window_focus (window, timestamp);

      set_net_wm_state (window);
    }
}

void
meta_window_unshade (MetaWindow  *window,
                     guint32      timestamp)
{
  meta_topic (META_DEBUG_WINDOW_OPS,
              "Unshading %s\n", window->desc);
  if (window->shaded)
    {
      window->shaded = FALSE;
      meta_window_queue(window, META_QUEUE_MOVE_RESIZE | META_QUEUE_CALC_SHOWING);

      /* focus the window */
      meta_topic (META_DEBUG_FOCUS,
                  "Focusing window %s after unshading it\n",
                  window->desc);
      meta_window_focus (window, timestamp);

      set_net_wm_state (window);
    }
}

static gboolean
unminimize_func (MetaWindow *window,
                 void       *data)
{
  meta_window_unminimize (window);
  return TRUE;
}

static void
unminimize_window_and_all_transient_parents (MetaWindow *window)
{
  meta_window_unminimize (window);
  meta_window_foreach_ancestor (window, unminimize_func, NULL);
}

static void
window_activate (MetaWindow     *window,
                 guint32         timestamp,
                 MetaClientType  source_indication,
                 MetaWorkspace  *workspace)
{
  gboolean allow_workspace_switch = FALSE;
  gboolean can_ignore_outdated_timestamps;
  meta_topic (META_DEBUG_FOCUS,
              "_NET_ACTIVE_WINDOW message sent for %s at time %u "
              "by client type %u.\n",
              window->desc, timestamp, source_indication);

  allow_workspace_switch = (timestamp != 0);

  /* Older EWMH spec didn't specify a timestamp; we decide to honor these only
   * if the app specifies that it is a pager.
   *
   * Update: Unconditionally honor 0 timestamps for now; we'll fight
   * that battle later.  Just remove the "FALSE &&" in order to only
   * honor 0 timestamps for pagers.
   */
  can_ignore_outdated_timestamps = (timestamp != 0);
  if (XSERVER_TIME_IS_BEFORE (timestamp, window->display->last_user_time) &&
      can_ignore_outdated_timestamps)
    {
      /* this comment comes from openbox:
       * we can not trust the timestamp from applications.
         e.g. chromium passes a very old timestamp.  openbox thinks
         the window will get focus and calls XSetInputFocus with the
         (old) timestamp, which doesn't end up moving focus at all.
         but the window is raised, not hilited, etc, as if it was
         really going to get focus.

         so do not use this timestamp in data.l[1], as this would
         be used in XSetInputFocus.
         */
      meta_topic (META_DEBUG_FOCUS,
                  "last_user_time (%u) is more recent; ignoring "
                  " _NET_ACTIVE_WINDOW timestamp.\n",
                  window->display->last_user_time);
      /*meta_window_set_demands_attention(window);*/
      /*return;*/
      timestamp = 0;
    }

  /* For those stupid pagers, get a valid timestamp and show a warning */
  if (timestamp == 0)
    {
      meta_warning ("meta_window_activate called by a pager with a 0 timestamp; "
                    "the pager needs to be fixed.\n");
      timestamp = meta_display_get_current_time_roundtrip (window->display);
    }

  meta_window_set_user_time (window, timestamp);

  /* disable show desktop mode unless we're a desktop component */
  maybe_leave_show_desktop_mode (window);

  /* Get window on current or given workspace */
  if (workspace == NULL)
    workspace = window->screen->active_workspace;

  /* For non-transient windows, we just set up a pulsing indicator,
     rather than move windows or workspaces.
     See http://bugzilla.gnome.org/show_bug.cgi?id=482354 */
  if (window->xtransient_for == None &&
      !allow_workspace_switch &&
      !meta_window_located_on_workspace (window, workspace))
    {
      meta_window_set_demands_attention (window);
      /* We've marked it as demanding, don't need to do anything else. */
      return;
    }
  else if (window->xtransient_for != None)
    {
      /* Move transients to current workspace - preference dialogs should appear over
         the source window.  */
      meta_window_change_workspace (window, workspace);
    }

  if (window->shaded)
    meta_window_unshade (window, timestamp);

  unminimize_window_and_all_transient_parents (window);

  if (meta_prefs_get_raise_on_click () ||
      source_indication == META_CLIENT_TYPE_PAGER)
    meta_window_raise (window);

  meta_topic (META_DEBUG_FOCUS,
              "Focusing window %s due to activation\n",
              window->desc);

  if (meta_window_located_on_workspace (window, workspace))
    meta_window_focus (window, timestamp);
  else
    meta_workspace_activate_with_focus (window->workspace, window, timestamp);
}

/* This function exists since most of the functionality in window_activate
 * is useful for Metacity, but Metacity shouldn't need to specify a client
 * type for itself.  ;-)
 */
void
meta_window_activate (MetaWindow     *window,
                      guint32         timestamp)
{
  /* We're not really a pager, but the behavior we want is the same as if
   * we were such.  If we change the pager behavior later, we could revisit
   * this and just add extra flags to window_activate.
   */
  window_activate (window, timestamp, META_CLIENT_TYPE_PAGER, NULL);
}

void
meta_window_activate_with_workspace (MetaWindow     *window,
                                     guint32         timestamp,
                                     MetaWorkspace  *workspace)
{
  /* We're not really a pager, but the behavior we want is the same as if
   * we were such.  If we change the pager behavior later, we could revisit
   * this and just add extra flags to window_activate.
   */
  window_activate (window, timestamp, META_CLIENT_TYPE_APPLICATION, workspace);
}

/* Manually fix all the weirdness explained in the big comment at the
 * beginning of meta_window_move_resize_internal() giving positions
 * expected by meta_window_constrain (i.e. positions & sizes of the
 * internal or client window).
 */
static void
adjust_for_gravity (MetaWindow        *window,
                    MetaFrameBorders  *borders,
                    gboolean           coords_assume_border,
                    int                gravity,
                    MetaRectangle     *rect)
{
  int ref_x, ref_y;
  int bw;
  int child_x, child_y;
  int frame_width, frame_height;

  if (coords_assume_border)
    bw = window->border_width;
  else
    bw = 0;

  if (borders)
    {
      child_x = borders->visible.left;
      child_y = borders->visible.top;
      frame_width = child_x + rect->width + borders->visible.right;
      frame_height = child_y + rect->height + borders->visible.bottom;
    }
  else
    {
      child_x = 0;
      child_y = 0;
      frame_width = rect->width;
      frame_height = rect->height;
    }

  /* We're computing position to pass to window_move, which is
   * the position of the client window (StaticGravity basically)
   *
   * (see WM spec description of gravity computation, but note that
   * their formulas assume we're honoring the border width, rather
   * than compensating for having turned it off)
   */
  switch (gravity)
    {
    case NorthWestGravity:
      ref_x = rect->x;
      ref_y = rect->y;
      break;
    case NorthGravity:
      ref_x = rect->x + rect->width / 2 + bw;
      ref_y = rect->y;
      break;
    case NorthEastGravity:
      ref_x = rect->x + rect->width + bw * 2;
      ref_y = rect->y;
      break;
    case WestGravity:
      ref_x = rect->x;
      ref_y = rect->y + rect->height / 2 + bw;
      break;
    case CenterGravity:
      ref_x = rect->x + rect->width / 2 + bw;
      ref_y = rect->y + rect->height / 2 + bw;
      break;
    case EastGravity:
      ref_x = rect->x + rect->width + bw * 2;
      ref_y = rect->y + rect->height / 2 + bw;
      break;
    case SouthWestGravity:
      ref_x = rect->x;
      ref_y = rect->y + rect->height + bw * 2;
      break;
    case SouthGravity:
      ref_x = rect->x + rect->width / 2 + bw;
      ref_y = rect->y + rect->height + bw * 2;
      break;
    case SouthEastGravity:
      ref_x = rect->x + rect->width + bw * 2;
      ref_y = rect->y + rect->height + bw * 2;
      break;
    case StaticGravity:
    default:
      ref_x = rect->x;
      ref_y = rect->y;
      break;
    }

  switch (gravity)
    {
    case NorthWestGravity:
      rect->x = ref_x + child_x;
      rect->y = ref_y + child_y;
      break;
    case NorthGravity:
      rect->x = ref_x - frame_width / 2 + child_x;
      rect->y = ref_y + child_y;
      break;
    case NorthEastGravity:
      rect->x = ref_x - frame_width + child_x;
      rect->y = ref_y + child_y;
      break;
    case WestGravity:
      rect->x = ref_x + child_x;
      rect->y = ref_y - frame_height / 2 + child_y;
      break;
    case CenterGravity:
      rect->x = ref_x - frame_width / 2 + child_x;
      rect->y = ref_y - frame_height / 2 + child_y;
      break;
    case EastGravity:
      rect->x = ref_x - frame_width + child_x;
      rect->y = ref_y - frame_height / 2 + child_y;
      break;
    case SouthWestGravity:
      rect->x = ref_x + child_x;
      rect->y = ref_y - frame_height + child_y;
      break;
    case SouthGravity:
      rect->x = ref_x - frame_width / 2 + child_x;
      rect->y = ref_y - frame_height + child_y;
      break;
    case SouthEastGravity:
      rect->x = ref_x - frame_width + child_x;
      rect->y = ref_y - frame_height + child_y;
      break;
    case StaticGravity:
    default:
      rect->x = ref_x;
      rect->y = ref_y;
      break;
    }
}

static gboolean
static_gravity_works (MetaDisplay *display)
{
  return display->static_gravity_works;
}

static void
send_sync_request (MetaWindow *window)
{
  XSyncValue value;
  XClientMessageEvent ev;

  window->sync_request_serial++;

  XSyncIntToValue (&value, window->sync_request_serial);

  ev.type = ClientMessage;
  ev.window = window->xwindow;
  ev.message_type = window->display->atom_WM_PROTOCOLS;
  ev.format = 32;
  ev.data.l[0] = window->display->atom__NET_WM_SYNC_REQUEST;
  /* FIXME: meta_display_get_current_time() is bad, but since calls
   * come from meta_window_move_resize_internal (which in turn come
   * from all over), I'm not sure what we can do to fix it.  Do we
   * want to use _roundtrip, though?
   */
  ev.data.l[1] = meta_display_get_current_time (window->display);
  ev.data.l[2] = XSyncValueLow32 (value);
  ev.data.l[3] = XSyncValueHigh32 (value);

  /* We don't need to trap errors here as we are already
   * inside an error_trap_push()/pop() pair.
   */
  XSendEvent (window->display->xdisplay,
	      window->xwindow, False, 0, (XEvent*) &ev);

  g_get_current_time (&window->sync_request_time);
}

static gboolean
move_attached_dialog (MetaWindow *window,
                      void       *data)
{
  MetaWindow *parent = meta_window_get_transient_for (window);

  if (window->type == META_WINDOW_MODAL_DIALOG && parent && parent != window)
    /* It ignores x,y for such a dialog */
    meta_window_move (window, FALSE, 0, 0);

  return FALSE;
}

static void
meta_window_move_resize_internal (MetaWindow          *window,
                                  MetaMoveResizeFlags  flags,
                                  int                  gravity,
                                  int                  root_x_nw,
                                  int                  root_y_nw,
                                  int                  w,
                                  int                  h)
{
  /* meta_window_move_resize_internal gets called with very different
   * meanings for root_x_nw and root_y_nw.  w & h are always the area
   * of the inner or client window (i.e. excluding the frame) and
   * gravity is the relevant gravity associated with the request (note
   * that gravity is ignored for move-only operations unless its
   * e.g. a configure request).  The location is different for
   * different cases because of how this function gets called; note
   * that in all cases what we want to find out is the upper left
   * corner of the position of the inner window:
   *
   *   Case | Called from (flags; gravity)
   *   -----+-----------------------------------------------
   *    1   | A resize only ConfigureRequest
   *    1   | meta_window_resize
   *    1   | meta_window_resize_with_gravity
   *    2   | New window
   *    2   | Session restore
   *    2   | A not-resize-only ConfigureRequest/net_moveresize_window request
   *    3   | meta_window_move
   *    3   | meta_window_move_resize
   *
   * For each of the cases, root_x_nw and root_y_nw must be treated as follows:
   *
   *   (1) They should be entirely ignored; instead the previous position
   *       and size of the window should be resized according to the given
   *       gravity in order to determine the new position of the window.
   *   (2) Needs to be fixed up by adjust_for_gravity() as these
   *       coordinates are relative to some corner or side of the outer
   *       window (except for the case of StaticGravity) and we want to
   *       know the location of the upper left corner of the inner window.
   *   (3) These values are already the desired positon of the NW corner
   *       of the inner window
   */
  XWindowChanges values;
  unsigned int mask;
  gboolean need_configure_notify;
  MetaFrameBorders borders;
  gboolean need_move_client = FALSE;
  gboolean need_move_frame = FALSE;
  gboolean need_resize_client = FALSE;
  gboolean need_resize_frame = FALSE;
  int frame_size_dx;
  int frame_size_dy;
  int size_dx;
  int size_dy;
  gboolean frame_shape_changed = FALSE;
  gboolean is_configure_request;
  gboolean do_gravity_adjust;
  gboolean is_user_action;
  gboolean configure_frame_first;
  gboolean use_static_gravity;
  /* used for the configure request, but may not be final
   * destination due to StaticGravity etc.
   */
  int client_move_x;
  int client_move_y;
  MetaRectangle new_rect;
  MetaRectangle old_rect;

  is_configure_request = (flags & META_IS_CONFIGURE_REQUEST) != 0;
  do_gravity_adjust = (flags & META_DO_GRAVITY_ADJUST) != 0;
  is_user_action = (flags & META_IS_USER_ACTION) != 0;

  /* The action has to be a move or a resize or both... */
  g_assert (flags & (META_IS_MOVE_ACTION | META_IS_RESIZE_ACTION));

  /* We don't need it in the idle queue anymore. */
  meta_window_unqueue (window, META_QUEUE_MOVE_RESIZE);

  meta_window_get_client_root_coords (window, &old_rect);

  w = MAX (0, MIN (w, 32767));
  h = MAX (0, MIN (h, 32767));

  meta_topic (META_DEBUG_GEOMETRY,
              "Move/resize %s to %d,%d %dx%d%s%s from %d,%d %dx%d\n",
              window->desc, root_x_nw, root_y_nw, w, h,
              is_configure_request ? " (configure request)" : "",
              is_user_action ? " (user move/resize)" : "",
              old_rect.x, old_rect.y, old_rect.width, old_rect.height);

  if (window->frame) {
    meta_frame_calc_borders (window->frame, &borders);
  }

  new_rect.x = root_x_nw;
  new_rect.y = root_y_nw;
  new_rect.width  = w;
  new_rect.height = h;

  /* If this is a resize only, the position should be ignored and
   * instead obtained by resizing the old rectangle according to the
   * relevant gravity.
   */
  if ((flags & (META_IS_MOVE_ACTION | META_IS_RESIZE_ACTION)) ==
      META_IS_RESIZE_ACTION)
    {
      meta_rectangle_resize_with_gravity (&old_rect,
                                          &new_rect,
                                          gravity,
                                          new_rect.width,
                                          new_rect.height);

      meta_topic (META_DEBUG_GEOMETRY,
                  "Compensated for gravity in resize action; new pos %d,%d\n",
                  new_rect.x, new_rect.y);
    }
  else if (is_configure_request || do_gravity_adjust)
    {
      adjust_for_gravity (window,
                          window->frame ? &borders : NULL,
                          /* configure request coords assume
                           * the border width existed
                           */
                          is_configure_request,
                          gravity,
                          &new_rect);

      meta_topic (META_DEBUG_GEOMETRY,
                  "Compensated for configure_request/do_gravity_adjust needing "
                  "weird positioning; new pos %d,%d\n",
                  new_rect.x, new_rect.y);
    }

  if (!window->deepin_override)
    meta_window_constrain (window,
                           window->frame ? &borders : NULL,
                           flags,
                           gravity,
                           &old_rect,
                           &new_rect);

  w = new_rect.width;
  h = new_rect.height;
  root_x_nw = new_rect.x;
  root_y_nw = new_rect.y;

  if (w != window->rect.width ||
      h != window->rect.height)
    need_resize_client = TRUE;

  window->rect.width = w;
  window->rect.height = h;

  if (window->frame)
    {
      int new_w, new_h;

      new_w = window->rect.width + borders.total.left + borders.total.right;
      new_w = MIN (new_w, 32767);

      if (window->shaded)
        new_h = borders.total.top;
      else
        new_h = window->rect.height + borders.total.top + borders.total.bottom;
      new_h = MIN (new_h, 32767);

      frame_size_dx = new_w - window->frame->rect.width;
      frame_size_dy = new_h - window->frame->rect.height;

      need_resize_frame = (frame_size_dx != 0 || frame_size_dy != 0);

      window->frame->rect.width = new_w;
      window->frame->rect.height = new_h;

      meta_topic (META_DEBUG_GEOMETRY,
                  "Calculated frame size %dx%d\n",
                  window->frame->rect.width,
                  window->frame->rect.height);
    }
  else
    {
      frame_size_dx = 0;
      frame_size_dy = 0;
    }

  /* For nice effect, when growing the window we want to move/resize
   * the frame first, when shrinking the window we want to move/resize
   * the client first. If we grow one way and shrink the other,
   * see which way we're moving "more"
   *
   * Mail from Owen subject "Suggestion: Gravity and resizing from the left"
   * http://mail.gnome.org/archives/wm-spec-list/1999-November/msg00088.html
   *
   * An annoying fact you need to know in this code is that StaticGravity
   * does nothing if you _only_ resize or _only_ move the frame;
   * it must move _and_ resize, otherwise you get NorthWestGravity
   * behavior. The move and resize must actually occur, it is not
   * enough to set CWX | CWWidth but pass in the current size/pos.
   */

  if (window->frame)
    {
      int new_x, new_y;
      int frame_pos_dx, frame_pos_dy;

      /* Compute new frame coords */
      new_x = root_x_nw - borders.total.left;
      new_y = root_y_nw - borders.total.top;

      frame_pos_dx = new_x - window->frame->rect.x;
      frame_pos_dy = new_y - window->frame->rect.y;

      need_move_frame = (frame_pos_dx != 0 || frame_pos_dy != 0);

      window->frame->rect.x = new_x;
      window->frame->rect.y = new_y;

      /* If frame will both move and resize, then StaticGravity
       * on the child window will kick in and implicitly move
       * the child with respect to the frame. The implicit
       * move will keep the child in the same place with
       * respect to the root window. If frame only moves
       * or only resizes, then the child will just move along
       * with the frame.
       */

      /* window->rect.x, window->rect.y are relative to frame,
       * remember they are the server coords
       */

      new_x = borders.total.left;
      new_y = borders.total.top;

      if (need_resize_frame && need_move_frame &&
          static_gravity_works (window->display))
        {
          /* static gravity kicks in because frame
           * is both moved and resized
           */
          /* when we move the frame by frame_pos_dx, frame_pos_dy the
           * client will implicitly move relative to frame by the
           * inverse delta.
           *
           * When moving client then frame, we move the client by the
           * frame delta, to be canceled out by the implicit move by
           * the inverse frame delta, resulting in a client at new_x,
           * new_y.
           *
           * When moving frame then client, we move the client
           * by the same delta as the frame, because the client
           * was "left behind" by the frame - resulting in a client
           * at new_x, new_y.
           *
           * In both cases we need to move the client window
           * in all cases where we had to move the frame window.
           */

          client_move_x = new_x + frame_pos_dx;
          client_move_y = new_y + frame_pos_dy;

          if (need_move_frame)
            need_move_client = TRUE;

          use_static_gravity = TRUE;
        }
      else
        {
          client_move_x = new_x;
          client_move_y = new_y;

          if (client_move_x != window->rect.x ||
              client_move_y != window->rect.y)
            need_move_client = TRUE;

          use_static_gravity = FALSE;
        }

      /* This is the final target position, but not necessarily what
       * we pass to XConfigureWindow, due to StaticGravity implicit
       * movement.
       */
      window->rect.x = new_x;
      window->rect.y = new_y;
    }
  else
    {
      if (root_x_nw != window->rect.x ||
          root_y_nw != window->rect.y)
        need_move_client = TRUE;

      window->rect.x = root_x_nw;
      window->rect.y = root_y_nw;

      client_move_x = window->rect.x;
      client_move_y = window->rect.y;

      use_static_gravity = FALSE;
    }

  /* If frame extents have changed, fill in other frame fields and
     change frame's extents property. */
  if (window->frame &&
      (window->frame->child_x != borders.total.left ||
       window->frame->child_y != borders.total.top ||
       window->frame->right_width != borders.total.right ||
       window->frame->bottom_height != borders.total.bottom))
    {
      window->frame->child_x = borders.total.left;
      window->frame->child_y = borders.total.top;
      window->frame->right_width = borders.total.right;
      window->frame->bottom_height = borders.total.bottom;

      update_net_frame_extents (window);
    }

  /* See ICCCM 4.1.5 for when to send ConfigureNotify */

  need_configure_notify = FALSE;

  /* If this is a configure request and we change nothing, then we
   * must send configure notify.
   */
  if  (is_configure_request &&
       !(need_move_client || need_move_frame ||
         need_resize_client || need_resize_frame ||
         window->border_width != 0))
    need_configure_notify = TRUE;

  /* We must send configure notify if we move but don't resize, since
   * the client window may not get a real event
   */
  if ((need_move_client || need_move_frame) &&
      !(need_resize_client || need_resize_frame))
    need_configure_notify = TRUE;

  /* MapRequest events with a PPosition or UPosition hint with a frame
   * are moved by metacity without resizing; send a configure notify
   * in such cases.  See #322840.  (Note that window->constructing is
   * only true iff this call is due to a MapRequest, and when
   * PPosition/UPosition hints aren't set, metacity seems to send a
   * ConfigureNotify anyway due to the above code.)
   */
  if (window->constructing && window->frame &&
      ((window->size_hints.flags & PPosition) ||
       (window->size_hints.flags & USPosition)))
    need_configure_notify = TRUE;

  /* The rest of this function syncs our new size/pos with X as
   * efficiently as possible
   */

  /* configure frame first if we grow more than we shrink
   */
  size_dx = w - window->rect.width;
  size_dy = h - window->rect.height;

  configure_frame_first = (size_dx + size_dy >= 0);

  if (use_static_gravity)
    meta_window_set_gravity (window, StaticGravity);

  if (configure_frame_first && window->frame)
    frame_shape_changed = meta_frame_sync_to_window (window->frame,
                                                     gravity,
                                                     need_move_frame,
                                                     need_resize_frame);

  values.border_width = 0;
  values.x = client_move_x;
  values.y = client_move_y;
  values.width = window->rect.width;
  values.height = window->rect.height;

  mask = 0;
  if (is_configure_request && window->border_width != 0)
    mask |= CWBorderWidth; /* must force to 0 */
  if (need_move_client)
    mask |= (CWX | CWY);
  if (need_resize_client)
    mask |= (CWWidth | CWHeight);

  if (mask != 0)
    {
      {
        int newx, newy;
        meta_window_get_position (window, &newx, &newy);
        meta_topic (META_DEBUG_GEOMETRY,
                    "Syncing new client geometry %d,%d %dx%d, border: %s pos: %s size: %s\n",
                    newx, newy,
                    window->rect.width, window->rect.height,
                    mask & CWBorderWidth ? "true" : "false",
                    need_move_client ? "true" : "false",
                    need_resize_client ? "true" : "false");
      }

      meta_error_trap_push (window->display);

      if (window->sync_request_counter != None &&
	  window->display->grab_sync_request_alarm != None &&
	  window->sync_request_time.tv_usec == 0 &&
	  window->sync_request_time.tv_sec == 0)
	{
	  /* turn off updating */
	  if (window->display->compositor)
	    meta_compositor_set_updates (window->display->compositor, window, FALSE);

	  send_sync_request (window);
	}

      XConfigureWindow (window->display->xdisplay,
                        window->xwindow,
                        mask,
                        &values);

      meta_error_trap_pop (window->display, FALSE);
    }

  if (!configure_frame_first && window->frame)
    frame_shape_changed = meta_frame_sync_to_window (window->frame,
                                                     gravity,
                                                     need_move_frame,
                                                     need_resize_frame);

  /* Put gravity back to be nice to lesser window managers */
  if (use_static_gravity)
    meta_window_set_gravity (window, NorthWestGravity);

  if (need_configure_notify)
    send_configure_notify (window);

  if (!window->placed && window->force_save_user_rect && !window->fullscreen)
    force_save_user_window_placement (window);
  else if (is_user_action)
    save_user_window_placement (window);

  if (need_move_frame || need_resize_frame ||
      need_move_client || need_resize_client)
    {
      int newx, newy;
      meta_window_get_position (window, &newx, &newy);
      meta_topic (META_DEBUG_GEOMETRY,
                  "New size/position %d,%d %dx%d (user %d,%d %dx%d)\n",
                  newx, newy, window->rect.width, window->rect.height,
                  window->user_rect.x, window->user_rect.y,
                  window->user_rect.width, window->user_rect.height);
    }
  else
    {
      meta_topic (META_DEBUG_GEOMETRY, "Size/position not modified\n");
    }

  if (need_resize_frame || need_resize_client) 
    {
      deepin_message_hub_window_damaged(window, NULL, 0);
    }

  if (window->display->grab_wireframe_active)
    meta_window_update_wireframe (window, root_x_nw, root_y_nw, w, h);
  else
    meta_window_refresh_resize_popup (window);

  /* Invariants leaving this function are:
   *   a) window->rect and frame->rect reflect the actual
   *      server-side size/pos of window->xwindow and frame->xwindow
   *   b) all constraints are obeyed by window->rect and frame->rect
   */

  if (frame_shape_changed && window->frame_bounds)
    {
      cairo_region_destroy (window->frame_bounds);
      window->frame_bounds = NULL;
    }

  if (meta_prefs_get_attach_modal_dialogs ())
    meta_window_foreach_transient (window, move_attached_dialog, NULL);
}

void
meta_window_resize (MetaWindow  *window,
                    gboolean     user_op,
                    int          w,
                    int          h)
{
  int x, y;
  MetaMoveResizeFlags flags;

  meta_window_get_position (window, &x, &y);

  flags = (user_op ? META_IS_USER_ACTION : 0) | META_IS_RESIZE_ACTION;
  meta_window_move_resize_internal (window,
                                    flags,
                                    NorthWestGravity,
                                    x, y, w, h);
}

void
meta_window_move (MetaWindow  *window,
                  gboolean     user_op,
                  int          root_x_nw,
                  int          root_y_nw)
{
  MetaMoveResizeFlags flags =
    (user_op ? META_IS_USER_ACTION : 0) | META_IS_MOVE_ACTION;
  meta_window_move_resize_internal (window,
                                    flags,
                                    NorthWestGravity,
                                    root_x_nw, root_y_nw,
                                    window->rect.width,
                                    window->rect.height);
}

void
meta_window_move_resize (MetaWindow  *window,
                         gboolean     user_op,
                         int          root_x_nw,
                         int          root_y_nw,
                         int          w,
                         int          h)
{
  MetaMoveResizeFlags flags =
    (user_op ? META_IS_USER_ACTION : 0) |
    META_IS_MOVE_ACTION | META_IS_RESIZE_ACTION;
  meta_window_move_resize_internal (window,
                                    flags,
                                    NorthWestGravity,
                                    root_x_nw, root_y_nw,
                                    w, h);
}

void
meta_window_resize_with_gravity (MetaWindow *window,
                                 gboolean     user_op,
                                 int          w,
                                 int          h,
                                 int          gravity)
{
  int x, y;
  MetaMoveResizeFlags flags;

  meta_window_get_position (window, &x, &y);

  flags = (user_op ? META_IS_USER_ACTION : 0) | META_IS_RESIZE_ACTION;
  meta_window_move_resize_internal (window,
                                    flags,
                                    gravity,
                                    x, y, w, h);
}

static void
meta_window_move_resize_now (MetaWindow  *window)
{
  /* If constraints have changed then we want to snap back to wherever
   * the user had the window.  We use user_rect for this reason.  See
   * also bug 426519 comment 3.
   */
  meta_window_move_resize (window, FALSE,
                           window->user_rect.x,
                           window->user_rect.y,
                           window->user_rect.width,
                           window->user_rect.height);
}

static gboolean
idle_move_resize (gpointer data)
{
  GSList *tmp;
  GSList *copy;
  guint queue_index = GPOINTER_TO_INT (data);

  meta_topic (META_DEBUG_GEOMETRY, "Clearing the move_resize queue\n");

  /* Work with a copy, for reentrancy. The allowed reentrancy isn't
   * complete; destroying a window while we're in here would result in
   * badness. But it's OK to queue/unqueue move_resizes.
   */
  copy = g_slist_copy (queue_pending[queue_index]);
  g_slist_free (queue_pending[queue_index]);
  queue_pending[queue_index] = NULL;
  queue_idle[queue_index] = 0;

  destroying_windows_disallowed += 1;

  tmp = copy;
  while (tmp != NULL)
    {
      MetaWindow *window;

      window = tmp->data;

      /* As a side effect, sets window->move_resize_queued = FALSE */
      meta_window_move_resize_now (window);

      tmp = tmp->next;
    }

  g_slist_free (copy);

  destroying_windows_disallowed -= 1;

  return FALSE;
}

void
meta_window_get_position (MetaWindow  *window,
                          int         *x,
                          int         *y)
{
  if (window->frame)
    {
      if (x)
        *x = window->frame->rect.x + window->frame->child_x;
      if (y)
        *y = window->frame->rect.y + window->frame->child_y;
    }
  else
    {
      if (x)
        *x = window->rect.x;
      if (y)
        *y = window->rect.y;
    }
}

void
meta_window_get_client_root_coords (MetaWindow    *window,
                                    MetaRectangle *rect)
{
  meta_window_get_position (window, &rect->x, &rect->y);
  rect->width  = window->rect.width;
  rect->height = window->rect.height;
}

void
meta_window_get_gravity_position (MetaWindow  *window,
                                  int          gravity,
                                  int         *root_x,
                                  int         *root_y)
{
  MetaRectangle frame_extents;
  int w, h;
  int x, y;

  w = window->rect.width;
  h = window->rect.height;

  if (gravity == StaticGravity)
    {
      frame_extents = window->rect;
      if (window->frame)
        {
          frame_extents.x = window->frame->rect.x + window->frame->child_x;
          frame_extents.y = window->frame->rect.y + window->frame->child_y;
        }
    }
  else
    {
      if (window->frame == NULL)
        frame_extents = window->rect;
      else
        frame_extents = window->frame->rect;
    }

  x = frame_extents.x;
  y = frame_extents.y;

  switch (gravity)
    {
    case NorthGravity:
    case CenterGravity:
    case SouthGravity:
      /* Find center of frame. */
      x += frame_extents.width / 2;
      /* Center client window on that point. */
      x -= w / 2;
      break;

    case SouthEastGravity:
    case EastGravity:
    case NorthEastGravity:
      /* Find right edge of frame */
      x += frame_extents.width;
      /* Align left edge of client at that point. */
      x -= w;
      break;
    default:
      break;
    }

  switch (gravity)
    {
    case WestGravity:
    case CenterGravity:
    case EastGravity:
      /* Find center of frame. */
      y += frame_extents.height / 2;
      /* Center client window there. */
      y -= h / 2;
      break;
    case SouthWestGravity:
    case SouthGravity:
    case SouthEastGravity:
      /* Find south edge of frame */
      y += frame_extents.height;
      /* Place bottom edge of client there */
      y -= h;
      break;
    default:
      break;
    }

  if (root_x)
    *root_x = x;
  if (root_y)
    *root_y = y;
}

void
meta_window_get_geometry (MetaWindow  *window,
                          int         *x,
                          int         *y,
                          int         *width,
                          int         *height)
{
  meta_window_get_gravity_position (window,
                                    window->size_hints.win_gravity,
                                    x, y);

  *width = (window->rect.width - window->size_hints.base_width) /
    window->size_hints.width_inc;
  *height = (window->rect.height - window->size_hints.base_height) /
    window->size_hints.height_inc;
}

/**
 * meta_window_get_input_rect:
 * @window: a #MetaWindow
 * @rect: (out): pointer to an allocated #MetaRectangle
 *
 * Gets the rectangle that bounds @window that is responsive to mouse events.
 * This includes decorations - the visible portion of its border - and (if
 * present) any invisible area that we make make responsive to mouse clicks in
 * order to allow convenient border dragging.
 */
void
meta_window_get_input_rect (const MetaWindow *window,
                            MetaRectangle    *rect)
{
  if (window->frame)
    *rect = window->frame->rect;
  else
    *rect = window->rect;
}

/**
 * meta_window_get_outer_rect:
 * @window: a #MetaWindow
 * @rect: (out): pointer to an allocated #MetaRectangle
 *
 * Gets the rectangle that bounds @window that is responsive to mouse events.
 * This includes only what is visible; it doesn't include any extra reactive
 * area we add to the edges of windows.
 */
void
meta_window_get_outer_rect (const MetaWindow *window,
                            MetaRectangle    *rect)
{
  if (window->frame)
    {
      MetaFrameBorders borders;
      *rect = window->frame->rect;
      meta_frame_calc_borders (window->frame, &borders);

      rect->x += borders.invisible.left;
      rect->y += borders.invisible.top;
      rect->width -= borders.invisible.left + borders.invisible.right;
      rect->height -= borders.invisible.top + borders.invisible.bottom;
    }
  else
    {
      *rect = window->rect;

      if (window->has_custom_frame_extents)
        {
          const GtkBorder *extents = &window->custom_frame_extents;
          rect->x += extents->left;
          rect->y += extents->top;
          rect->width -= extents->left + extents->right;
          rect->height -= extents->top + extents->bottom;
        }
    }
}

void
meta_window_get_xor_rect (MetaWindow          *window,
                          const MetaRectangle *grab_wireframe_rect,
                          MetaRectangle       *xor_rect)
{
  if (window->frame)
    {
      xor_rect->x = grab_wireframe_rect->x - window->frame->child_x;
      xor_rect->y = grab_wireframe_rect->y - window->frame->child_y;
      xor_rect->width = grab_wireframe_rect->width + window->frame->child_x + window->frame->right_width;

      if (window->shaded)
        xor_rect->height = window->frame->child_y;
      else
        xor_rect->height = grab_wireframe_rect->height + window->frame->child_y + window->frame->bottom_height;
    }
  else
    *xor_rect = *grab_wireframe_rect;
}

/* Figure out the numbers that show up in the
 * resize popup when in reduced resources mode.
 */
static void
meta_window_get_wireframe_geometry (MetaWindow    *window,
                                    int           *width,
                                    int           *height)
{
  if (!window->display->grab_wireframe_active)
    return;

  if ((width == NULL) || (height == NULL))
    return;

  if ((window->display->grab_window->size_hints.width_inc <= 1) ||
      (window->display->grab_window->size_hints.height_inc <= 1))
    {
      *width = -1;
      *height = -1;
      return;
    }

  *width = window->display->grab_wireframe_rect.width -
      window->display->grab_window->size_hints.base_width;
  *width /= window->display->grab_window->size_hints.width_inc;

  *height = window->display->grab_wireframe_rect.height -
      window->display->grab_window->size_hints.base_height;
  *height /= window->display->grab_window->size_hints.height_inc;
}

/* XXX META_EFFECT_ALT_TAB, well, this and others */
void
meta_window_begin_wireframe (MetaWindow *window)
{

  MetaRectangle new_xor;
  int display_width, display_height;

  display_width = 0;
  display_height = 0;

  meta_window_get_client_root_coords (window,
                                      &window->display->grab_wireframe_rect);

  meta_window_get_xor_rect (window, &window->display->grab_wireframe_rect,
                            &new_xor);
  meta_window_get_wireframe_geometry (window, &display_width, &display_height);

  meta_effects_begin_wireframe (window->screen,
                                &new_xor, display_width, display_height);

  window->display->grab_wireframe_last_xor_rect = new_xor;
  window->display->grab_wireframe_last_display_width = display_width;
  window->display->grab_wireframe_last_display_height = display_height;
}

void
meta_window_update_wireframe (MetaWindow *window,
                              int         x,
                              int         y,
                              int         width,
                              int         height)
{

  MetaRectangle new_xor;
  int display_width, display_height;

  display_width = 0;
  display_height = 0;

  window->display->grab_wireframe_rect.x = x;
  window->display->grab_wireframe_rect.y = y;
  window->display->grab_wireframe_rect.width = width;
  window->display->grab_wireframe_rect.height = height;

  meta_window_get_xor_rect (window, &window->display->grab_wireframe_rect,
                            &new_xor);
  meta_window_get_wireframe_geometry (window, &display_width, &display_height);

  meta_effects_update_wireframe (window->screen,
                                 &window->display->grab_wireframe_last_xor_rect,
                                 window->display->grab_wireframe_last_display_width,
                                 window->display->grab_wireframe_last_display_height,
                                 &new_xor, display_width, display_height);

  window->display->grab_wireframe_last_xor_rect = new_xor;
  window->display->grab_wireframe_last_display_width = display_width;
  window->display->grab_wireframe_last_display_height = display_height;
}

void
meta_window_end_wireframe (MetaWindow *window)
{
  meta_effects_end_wireframe (window->display->grab_window->screen,
                              &window->display->grab_wireframe_last_xor_rect,
                              window->display->grab_wireframe_last_display_width,
                              window->display->grab_wireframe_last_display_height);
}

void
meta_window_get_titlebar_rect (MetaWindow    *window,
                               MetaRectangle *rect)
{
  meta_window_get_outer_rect (window, rect);

  /* The returned rectangle is relative to the frame rect. */
  rect->x = 0;
  rect->y = 0;

  if (window->frame)
    {
      rect->height = window->frame->child_y;
    }
  else
    {
      /* Pick an arbitrary height for a titlebar. We might want to
       * eventually have CSD windows expose their borders to us. */
      rect->height = 50;
    }
}

const char*
meta_window_get_startup_id (MetaWindow *window)
{
  if (window->startup_id == NULL)
    {
      MetaGroup *group;

      group = meta_window_get_group (window);

      if (group != NULL)
        return meta_group_get_startup_id (group);
    }

  return window->startup_id;
}

static MetaWindow*
get_modal_transient (MetaWindow *window)
{
  GSList *windows;
  GSList *tmp;
  MetaWindow *modal_transient;

  /* A window can't be the transient of itself, but this is just for
   * convenience in the loop below; we manually fix things up at the
   * end if no real modal transient was found.
   */
  modal_transient = window;

  windows = meta_display_list_windows (window->display);
  tmp = windows;
  while (tmp != NULL)
    {
      MetaWindow *transient = tmp->data;

      if (transient->xtransient_for == modal_transient->xwindow &&
          transient->wm_state_modal)
        {
          modal_transient = transient;
          tmp = windows;
          continue;
        }

      tmp = tmp->next;
    }

  g_slist_free (windows);

  if (window == modal_transient)
    modal_transient = NULL;

  return modal_transient;
}

/* XXX META_EFFECT_FOCUS */
void
meta_window_focus (MetaWindow  *window,
                   guint32      timestamp)
{
  MetaWindow *modal_transient;

  meta_topic (META_DEBUG_FOCUS,
              "Setting input focus to window %s, input: %d take_focus: %d\n",
              window->desc, window->input, window->take_focus);

  if (window->display->grab_window &&
      window->display->grab_window->all_keys_grabbed)
    {
      meta_topic (META_DEBUG_FOCUS,
                  "Current focus window %s has global keygrab, not focusing window %s after all\n",
                  window->display->grab_window->desc, window->desc);
      return;
    }

  modal_transient = get_modal_transient (window);
  if (modal_transient != NULL &&
      !modal_transient->unmanaging)
    {
      meta_topic (META_DEBUG_FOCUS,
                  "%s has %s as a modal transient, so focusing it instead.\n",
                  window->desc, modal_transient->desc);
      if (!modal_transient->on_all_workspaces &&
          modal_transient->workspace != window->screen->active_workspace)
        meta_window_change_workspace (modal_transient,
                                      window->screen->active_workspace);
      window = modal_transient;
    }

  meta_window_flush_calc_showing (window);

  if ((!window->mapped || window->hidden) && !window->shaded)
    {
      meta_topic (META_DEBUG_FOCUS,
                  "Window %s is not showing, not focusing after all\n",
                  window->desc);
      return;
    }

  /* For output-only or shaded windows, focus the frame.
   * This seems to result in the client window getting key events
   * though, so I don't know if it's icccm-compliant.
   *
   * Still, we have to do this or keynav breaks for these windows.
   */
  if (window->frame &&
      (window->shaded ||
       !(window->input || window->take_focus)))
    {
      if (window->frame)
        {
          meta_topic (META_DEBUG_FOCUS,
                      "Focusing frame of %s\n", window->desc);
          meta_display_set_input_focus_window (window->display,
                                               window,
                                               TRUE,
                                               timestamp);
        }
    }
  else
    {
      if (window->input)
        {
          meta_topic (META_DEBUG_FOCUS,
                      "Setting input focus on %s since input = true\n",
                      window->desc);
          meta_display_set_input_focus_window (window->display,
                                               window,
                                               FALSE,
                                               timestamp);
        }

      if (window->take_focus)
        {
          meta_topic (META_DEBUG_FOCUS,
                      "Sending WM_TAKE_FOCUS to %s since take_focus = true\n",
                      window->desc);
          meta_window_send_icccm_message (window,
                                          window->display->atom_WM_TAKE_FOCUS,
                                          timestamp);
          window->display->expected_focus_window = window;
        }
    }

  if (window->wm_state_demands_attention)
    meta_window_unset_demands_attention(window);

  meta_effect_run_focus(window, NULL, NULL);
}

static void
meta_window_change_workspace_without_transients (MetaWindow    *window,
                                                 MetaWorkspace *workspace)
{
  meta_verbose ("Changing window %s to workspace %d\n",
                window->desc, meta_workspace_index (workspace));

  /* unstick if stuck. meta_window_unstick would call
   * meta_window_change_workspace recursively if the window
   * is not in the active workspace.
   */
  if (window->on_all_workspaces)
    meta_window_unstick (window);

  /* See if we're already on this space. If not, make sure we are */
  if (window->workspace != workspace)
    {
      meta_workspace_remove_window (window->workspace, window);
      meta_workspace_add_window (workspace, window);
    }
}

static gboolean
change_workspace_foreach (MetaWindow *window,
                          void       *data)
{
  meta_window_change_workspace_without_transients (window, data);
  return TRUE;
}

void
meta_window_change_workspace (MetaWindow    *window,
                              MetaWorkspace *workspace)
{
  deepin_message_hub_window_about_to_change_workspace(window, workspace);

  meta_window_change_workspace_without_transients (window, workspace);

  meta_window_foreach_transient (window, change_workspace_foreach,
                                 workspace);
  meta_window_foreach_ancestor (window, change_workspace_foreach,
                                workspace);
}

static void
window_stick_impl (MetaWindow  *window)
{
  GList *tmp;
  MetaWorkspace *workspace;

  meta_verbose ("Sticking window %s current on_all_workspaces = %d\n",
                window->desc, window->on_all_workspaces);

  if (window->on_all_workspaces)
    return;

  /* We don't change window->workspaces, because we revert
   * to that original workspace list if on_all_workspaces is
   * toggled back off.
   */
  window->on_all_workspaces = TRUE;

  /* We do, however, change the MRU lists of all the workspaces
   */
  tmp = window->screen->workspaces;
  while (tmp)
    {
      workspace = (MetaWorkspace *) tmp->data;
      if (!g_list_find (workspace->mru_list, window))
        workspace->mru_list = g_list_prepend (workspace->mru_list, window);

      tmp = tmp->next;
    }

  meta_window_set_current_workspace_hint (window);

  meta_window_queue(window, META_QUEUE_CALC_SHOWING);
}

static void
window_unstick_impl (MetaWindow  *window)
{
  GList *tmp;
  MetaWorkspace *workspace;

  if (!window->on_all_workspaces)
    return;

  /* Revert to window->workspaces */

  window->on_all_workspaces = FALSE;

  /* Remove window from MRU lists that it doesn't belong in */
  tmp = window->screen->workspaces;
  while (tmp)
    {
      workspace = (MetaWorkspace *) tmp->data;
      if (window->workspace != workspace)
        workspace->mru_list = g_list_remove (workspace->mru_list, window);
      tmp = tmp->next;
    }

  /* We change ourselves to the active workspace, since otherwise you'd get
   * a weird window-vaporization effect. Once we have UI for being
   * on more than one workspace this should probably be add_workspace
   * not change_workspace.
   */
  if (window->screen->active_workspace != window->workspace)
    meta_window_change_workspace (window, window->screen->active_workspace);

  meta_window_set_current_workspace_hint (window);

  meta_window_queue(window, META_QUEUE_CALC_SHOWING);
}

static gboolean
stick_foreach_func (MetaWindow *window,
                    void       *data)
{
  gboolean stick;

  stick = *(gboolean*)data;
  if (stick)
    window_stick_impl (window);
  else
    window_unstick_impl (window);
  return TRUE;
}

void
meta_window_stick (MetaWindow  *window)
{
  gboolean stick = TRUE;
  window_stick_impl (window);
  meta_window_foreach_transient (window,
                                 stick_foreach_func,
                                 &stick);
}

void
meta_window_unstick (MetaWindow  *window)
{
  gboolean stick = FALSE;
  window_unstick_impl (window);
  meta_window_foreach_transient (window,
                                 stick_foreach_func,
                                 &stick);
}

unsigned long
meta_window_get_net_wm_desktop (MetaWindow *window)
{
  if (window->on_all_workspaces)
    return 0xFFFFFFFF;
  else
    return meta_workspace_index (window->workspace);
}

static void
update_net_frame_extents (MetaWindow *window)
{
  unsigned long data[4] = { 0, 0, 0, 0 };

  if (window->frame)
    {
      MetaFrameBorders borders;

      meta_frame_calc_borders (window->frame, &borders);
      /* Left */
      data[0] = borders.visible.left;
      /* Right */
      data[1] = borders.visible.right;
      /* Top */
      data[2] = borders.visible.top;
      /* Bottom */
      data[3] = borders.visible.bottom;
    }

  meta_topic (META_DEBUG_GEOMETRY,
              "Setting _NET_FRAME_EXTENTS on managed window 0x%lx "
              "to left = %lu, right = %lu, top = %lu, bottom = %lu\n",
              window->xwindow, data[0], data[1], data[2], data[3]);

  meta_error_trap_push (window->display);
  XChangeProperty (window->display->xdisplay, window->xwindow,
                   window->display->atom__NET_FRAME_EXTENTS,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) data, 4);
  meta_error_trap_pop (window->display, FALSE);
}

void
meta_window_set_current_workspace_hint (MetaWindow *window)
{
  /* FIXME if on more than one workspace, we claim to be "sticky",
   * the WM spec doesn't say what to do here.
   */
  unsigned long data[1];

  if (window->workspace == NULL)
    {
      /* this happens when unmanaging windows */
      return;
    }

  data[0] = meta_window_get_net_wm_desktop (window);

  meta_verbose ("Setting _NET_WM_DESKTOP of %s to %lu\n",
                window->desc, data[0]);

  meta_error_trap_push (window->display);
  XChangeProperty (window->display->xdisplay, window->xwindow,
                   window->display->atom__NET_WM_DESKTOP,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) data, 1);
  meta_error_trap_pop (window->display, FALSE);
}

static gboolean
find_root_ancestor (MetaWindow *window,
                    void       *data)
{
  MetaWindow **ancestor = data;

  /* Overwrite the previously "most-root" ancestor with the new one found */
  *ancestor = window;

  /* We want this to continue until meta_window_foreach_ancestor quits because
   * there are no more valid ancestors.
   */
  return TRUE;
}

MetaWindow *
meta_window_find_root_ancestor (MetaWindow *window)
{
  MetaWindow *ancestor;
  ancestor = window;
  meta_window_foreach_ancestor (window, find_root_ancestor, &ancestor);
  return ancestor;
}

void
meta_window_raise (MetaWindow  *window)
{
  MetaWindow *ancestor;
  ancestor = meta_window_find_root_ancestor (window);

  meta_topic (META_DEBUG_WINDOW_OPS,
              "Raising window %s, ancestor of %s\n",
              ancestor->desc, window->desc);

  /* Raise the ancestor of the window (if the window has no ancestor,
   * then ancestor will be set to the window itself); do this because
   * it's weird to see windows from other apps stacked between a child
   * and parent window of the currently active app.  The stacking
   * constraints in stack.c then magically take care of raising all
   * the child windows appropriately.
   */
  if (window->screen->stack == ancestor->screen->stack)
    {
      meta_stack_raise (window->screen->stack, ancestor);
      MetaWindow* target = meta_stack_get_above (window->screen->stack,
              window, TRUE);
      if (target != NULL && !target->unmanaging && target->type == META_WINDOW_MODAL_DIALOG) 
        {
          MetaWindow* transient_for = meta_display_lookup_x_window (window->display, target->xtransient_for);
          if (transient_for == window)
            {
              deepin_message_hub_unable_to_operate(window);
            }
        }
    }
  else
    {
      meta_warning (
                    "Either stacks aren't per screen or some window has a weird "
                    "transient_for hint; window->screen->stack != "
                    "ancestor->screen->stack.  window = %s, ancestor = %s.\n",
                    window->desc, ancestor->desc);
      /* We could raise the window here, but don't want to do that twice and
       * so we let the case below handle that.
       */
    }

  /* Okay, so stacking constraints misses one case: If a window has
   * two children and we want to raise one of those children, then
   * raising the ancestor isn't enough; we need to also raise the
   * correct child.  See bug 307875.
   */
  if (window != ancestor)
    meta_stack_raise (window->screen->stack, window);
}

void
meta_window_lower (MetaWindow  *window)
{
  meta_topic (META_DEBUG_WINDOW_OPS,
              "Lowering window %s\n", window->desc);

  meta_stack_lower (window->screen->stack, window);
}

void
meta_window_send_icccm_message (MetaWindow *window,
                                Atom        atom,
                                guint32     timestamp)
{
  /* This comment and code are from twm, copyright
   * Open Group, Evans & Sutherland, etc.
   */

  /*
   * ICCCM Client Messages - Section 4.2.8 of the ICCCM dictates that all
   * client messages will have the following form:
   *
   *     event type	ClientMessage
   *     message type	_XA_WM_PROTOCOLS
   *     window		tmp->w
   *     format		32
   *     data[0]		message atom
   *     data[1]		time stamp
   */

    XClientMessageEvent ev;

    ev.type = ClientMessage;
    ev.window = window->xwindow;
    ev.message_type = window->display->atom_WM_PROTOCOLS;
    ev.format = 32;
    ev.data.l[0] = atom;
    ev.data.l[1] = timestamp;

    meta_error_trap_push (window->display);
    XSendEvent (window->display->xdisplay,
                window->xwindow, False, 0, (XEvent*) &ev);
    meta_error_trap_pop (window->display, FALSE);
}

void
meta_window_move_resize_request (MetaWindow *window,
                                 guint       value_mask,
                                 int         gravity,
                                 int         new_x,
                                 int         new_y,
                                 int         new_width,
                                 int         new_height)
{
  int x, y, width, height;
  gboolean allow_position_change;
  gboolean in_grab_op;
  MetaMoveResizeFlags flags;

  /* We ignore configure requests while the user is moving/resizing
   * the window, since these represent the app sucking and fighting
   * the user, most likely due to a bug in the app (e.g. pfaedit
   * seemed to do this)
   *
   * Still have to do the ConfigureNotify and all, but pretend the
   * app asked for the current size/position instead of the new one.
   */
  in_grab_op = FALSE;
  if (window->display->grab_op != META_GRAB_OP_NONE &&
      window == window->display->grab_window)
    {
      switch (window->display->grab_op)
        {
        case META_GRAB_OP_MOVING:
        case META_GRAB_OP_RESIZING_SE:
        case META_GRAB_OP_RESIZING_S:
        case META_GRAB_OP_RESIZING_SW:
        case META_GRAB_OP_RESIZING_N:
        case META_GRAB_OP_RESIZING_NE:
        case META_GRAB_OP_RESIZING_NW:
        case META_GRAB_OP_RESIZING_W:
        case META_GRAB_OP_RESIZING_E:
          in_grab_op = TRUE;
          break;
        case META_GRAB_OP_NONE:
        case META_GRAB_OP_KEYBOARD_MOVING:
        case META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN:
        case META_GRAB_OP_KEYBOARD_RESIZING_S:
        case META_GRAB_OP_KEYBOARD_RESIZING_N:
        case META_GRAB_OP_KEYBOARD_RESIZING_W:
        case META_GRAB_OP_KEYBOARD_RESIZING_E:
        case META_GRAB_OP_KEYBOARD_RESIZING_SE:
        case META_GRAB_OP_KEYBOARD_RESIZING_NE:
        case META_GRAB_OP_KEYBOARD_RESIZING_SW:
        case META_GRAB_OP_KEYBOARD_RESIZING_NW:
        case META_GRAB_OP_KEYBOARD_TABBING_NORMAL:
        case META_GRAB_OP_KEYBOARD_TABBING_DOCK:
        case META_GRAB_OP_KEYBOARD_ESCAPING_NORMAL:
        case META_GRAB_OP_KEYBOARD_ESCAPING_DOCK:
        case META_GRAB_OP_KEYBOARD_ESCAPING_GROUP:
        case META_GRAB_OP_KEYBOARD_TABBING_GROUP:
        case META_GRAB_OP_KEYBOARD_WORKSPACE_SWITCHING:
        case META_GRAB_OP_CLICKING_MINIMIZE:
        case META_GRAB_OP_CLICKING_MAXIMIZE:
        case META_GRAB_OP_CLICKING_UNMAXIMIZE:
        case META_GRAB_OP_CLICKING_DELETE:
        case META_GRAB_OP_CLICKING_MENU:
        case META_GRAB_OP_CLICKING_APPMENU:
        case META_GRAB_OP_CLICKING_SHADE:
        case META_GRAB_OP_CLICKING_UNSHADE:
        case META_GRAB_OP_CLICKING_ABOVE:
        case META_GRAB_OP_CLICKING_UNABOVE:
        case META_GRAB_OP_CLICKING_STICK:
        case META_GRAB_OP_CLICKING_UNSTICK:
          break;
        default:
          break;
        }
    }

  /* it's essential to use only the explicitly-set fields,
   * and otherwise use our current up-to-date position.
   *
   * Otherwise you get spurious position changes when the app changes
   * size, for example, if window->rect is not in sync with the
   * server-side position in effect when the configure request was
   * generated.
   */
  meta_window_get_gravity_position (window,
                                    gravity,
                                    &x, &y);

  allow_position_change = FALSE;

  if (meta_prefs_get_disable_workarounds ())
    {
      if (window->type == META_WINDOW_DIALOG ||
          window->type == META_WINDOW_MODAL_DIALOG ||
          window->type == META_WINDOW_SPLASHSCREEN)
        ; /* No position change for these */
      else if ((window->size_hints.flags & PPosition) ||
               /* USPosition is just stale if window is placed;
                * no --geometry involved here.
                */
               ((window->size_hints.flags & USPosition) &&
                !window->placed))
        allow_position_change = TRUE;
    }
  else
    {
      allow_position_change = TRUE;
    }

  if (in_grab_op)
    allow_position_change = FALSE;

  if (allow_position_change)
    {
      if (value_mask & CWX)
        x = new_x;
      if (value_mask & CWY)
        y = new_y;
      if (value_mask & (CWX | CWY))
        {
          /* Once manually positioned, windows shouldn't be placed
           * by the window manager.
           */
          window->placed = TRUE;
        }
    }
  else
    {
      meta_topic (META_DEBUG_GEOMETRY,
		  "Not allowing position change for window %s PPosition 0x%lx USPosition 0x%lx type %u\n",
		  window->desc, window->size_hints.flags & PPosition,
		  window->size_hints.flags & USPosition,
		  window->type);
    }

  width = window->rect.width;
  height = window->rect.height;
  if (!in_grab_op)
    {
      if (value_mask & CWWidth)
        width = new_width;

      if (value_mask & CWHeight)
        height = new_height;
    }

  /* ICCCM 4.1.5 */

  /* We're ignoring the value_mask here, since sizes
   * not in the mask will be the current window geometry.
   */
  window->size_hints.x = x;
  window->size_hints.y = y;
  window->size_hints.width = width;
  window->size_hints.height = height;

  /* NOTE: We consider ConfigureRequests to be "user" actions in one
   * way, but not in another.  Explanation of the two cases are in the
   * next two big comments.
   */

  /* The constraints code allows user actions to move windows
   * offscreen, etc., and configure request actions would often send
   * windows offscreen when users don't want it if not constrained
   * (e.g. hitting a dropdown triangle in a fileselector to show more
   * options, which makes the window bigger).  Thus we do not set
   * META_IS_USER_ACTION in flags to the
   * meta_window_move_resize_internal() call.
   */
  flags = META_IS_CONFIGURE_REQUEST;
  if (value_mask & (CWX | CWY))
    flags |= META_IS_MOVE_ACTION;
  if (value_mask & (CWWidth | CWHeight))
    flags |= META_IS_RESIZE_ACTION;

  if (flags & (META_IS_MOVE_ACTION | META_IS_RESIZE_ACTION))
    meta_window_move_resize_internal (window,
                                      flags,
                                      gravity,
                                      x,
                                      y,
                                      width,
                                      height);

  /* window->user_rect exists to allow "snapping-back" the window if a
   * new strut is set (causing the window to move) and then the strut
   * is later removed without the user moving the window in the
   * interim.  We'd like to "snap-back" to the position specified by
   * ConfigureRequest events (at least the constrained version of the
   * ConfigureRequest, since that is guaranteed to be onscreen) so we
   * set user_rect here.
   *
   * See also bug 426519.
   */
  save_user_window_placement (window);
}

gboolean
meta_window_configure_request (MetaWindow *window,
                               XEvent     *event)
{
  /* Note that x, y is the corner of the window border,
   * and width, height is the size of the window inside
   * its border, but that we always deny border requests
   * and give windows a border of 0. But we save the
   * requested border here.
   */
  if (event->xconfigurerequest.value_mask & CWBorderWidth)
    window->border_width = event->xconfigurerequest.border_width;

  meta_window_move_resize_request(window,
                                  event->xconfigurerequest.value_mask,
                                  window->size_hints.win_gravity,
                                  event->xconfigurerequest.x,
                                  event->xconfigurerequest.y,
                                  event->xconfigurerequest.width,
                                  event->xconfigurerequest.height);


  /* Handle stacking. We only handle raises/lowers (both absolute and
   * relative to siblings), mostly because stack.c really can't deal with
   * anything else.  I guess we'll fix that if a client turns up that really
   * requires it. Only a very few clients even require the raise/lower.  I'm
   * pretty sure no interesting client uses TopIf, BottomIf, or Opposite
   * anyway.
   */
  if (event->xconfigurerequest.value_mask & CWStackMode)
    {
      MetaWindow *active_window;
      active_window = window->display->expected_focus_window;
      if (meta_prefs_get_disable_workarounds ())
        {
          meta_topic (META_DEBUG_STACK,
                      "%s sent an xconfigure stacking request; this is "
                      "broken behavior and the request is being ignored.\n",
                      window->desc);
        }
      else if (active_window &&
               !meta_window_same_application (window, active_window) &&
               !meta_window_same_client (window, active_window) &&
               XSERVER_TIME_IS_BEFORE (window->net_wm_user_time,
                                       active_window->net_wm_user_time))
        {
          meta_topic (META_DEBUG_STACK,
                      "Ignoring xconfigure stacking request from %s (with "
                      "user_time %u); currently active application is %s (with "
                      "user_time %u).\n",
                      window->desc,
                      window->net_wm_user_time,
                      active_window->desc,
                      active_window->net_wm_user_time);
          if (event->xconfigurerequest.detail == Above)
            meta_window_set_demands_attention(window);
        }
      else
        {
          MetaWindow *sibling = NULL;

          if (event->xconfigurerequest.above != None)
            {
              sibling = meta_display_lookup_x_window (window->display,
                event->xconfigurerequest.above);
            }

          restack_window(window, sibling, event->xconfigurerequest.detail);
        }
    }

  return TRUE;
}

gboolean
meta_window_property_notify (MetaWindow *window,
                             XEvent     *event)
{
  return process_property_notify (window, &event->xproperty);
}

#define _NET_WM_MOVERESIZE_SIZE_TOPLEFT      0
#define _NET_WM_MOVERESIZE_SIZE_TOP          1
#define _NET_WM_MOVERESIZE_SIZE_TOPRIGHT     2
#define _NET_WM_MOVERESIZE_SIZE_RIGHT        3
#define _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT  4
#define _NET_WM_MOVERESIZE_SIZE_BOTTOM       5
#define _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT   6
#define _NET_WM_MOVERESIZE_SIZE_LEFT         7
#define _NET_WM_MOVERESIZE_MOVE              8
#define _NET_WM_MOVERESIZE_SIZE_KEYBOARD     9
#define _NET_WM_MOVERESIZE_MOVE_KEYBOARD    10
#define _NET_WM_MOVERESIZE_CANCEL           11

static void
restack_window (MetaWindow *window,
                MetaWindow *sibling,
                int direction)
{
 switch (direction)
   {
   case Above:
     if (sibling)
       meta_window_stack_just_above (window, sibling);
     else
       meta_window_raise (window);
     break;
   case Below:
     if (sibling)
       meta_window_stack_just_below (window, sibling);
     else
       meta_window_lower (window);
     break;
   case TopIf:
   case BottomIf:
   case Opposite:
     meta_verbose ("unsupported restack mode\n");
     break;
   default:
    break;
   }
}

static void
handle_net_restack_window (MetaDisplay* display,
                           XEvent *event)
{
  MetaWindow *window, *sibling = NULL;

  window = meta_display_lookup_x_window (display,
                                         event->xclient.window);

  if (window)
    {
      if (event->xclient.data.l[1])
        sibling = meta_display_lookup_x_window (display,
                                                event->xclient.data.l[1]);

      restack_window (window, sibling, event->xclient.data.l[2]);
    }
}

gboolean
meta_window_client_message (MetaWindow *window,
                            XEvent     *event)
{
  MetaDisplay *display;

  display = window->display;

  if (event->xclient.message_type ==
      display->atom__NET_CLOSE_WINDOW)
    {
      guint32 timestamp;

      if (event->xclient.data.l[0] != 0)
	timestamp = event->xclient.data.l[0];
      else
        {
          meta_warning ("Receiving a NET_CLOSE_WINDOW message for %s without "
                        "a timestamp!  This means some buggy (outdated) "
                        "application is on the loose!\n",
                        window->desc);
          timestamp = meta_display_get_current_time (window->display);
        }

      meta_window_delete (window, timestamp);

      return TRUE;
    }
  else if (event->xproperty.atom ==
           display->atom__NET_RESTACK_WINDOW)
    {
      handle_net_restack_window (display, event);
    }
  else if (event->xclient.message_type ==
           display->atom__NET_WM_DESKTOP)
    {
      int space;
      MetaWorkspace *workspace;

      space = event->xclient.data.l[0];

      meta_verbose ("Request to move %s to workspace %d\n",
                    window->desc, space);

      workspace =
        meta_screen_get_workspace_by_index (window->screen,
                                            space);

      if (workspace)
        {
          if (window->on_all_workspaces)
            meta_window_unstick (window);
          meta_window_change_workspace (window, workspace);
        }
      else if (space == (int) 0xFFFFFFFF)
        {
          meta_window_stick (window);
        }
      else
        {
          meta_verbose ("No such workspace %d for screen\n", space);
        }

      meta_verbose ("Window %s now on_all_workspaces = %d\n",
                    window->desc, window->on_all_workspaces);

      return TRUE;
    }
  else if (event->xclient.message_type ==
           display->atom__NET_WM_STATE)
    {
      gulong action;
      Atom first;
      Atom second;

      action = event->xclient.data.l[0];
      first = event->xclient.data.l[1];
      second = event->xclient.data.l[2];

      if (meta_is_verbose ())
        {
          char *str1;
          char *str2;

          meta_error_trap_push_with_return (display);
          str1 = XGetAtomName (display->xdisplay, first);
          if (meta_error_trap_pop_with_return (display, TRUE) != Success)
            str1 = NULL;

          meta_error_trap_push_with_return (display);
          str2 = XGetAtomName (display->xdisplay, second);
          if (meta_error_trap_pop_with_return (display, TRUE) != Success)
            str2 = NULL;

          meta_verbose ("Request to change _NET_WM_STATE action %lu atom1: %s atom2: %s\n",
                        action,
                        str1 ? str1 : "(unknown)",
                        str2 ? str2 : "(unknown)");

          meta_XFree (str1);
          meta_XFree (str2);
        }

      if (first == display->atom__NET_WM_STATE_SHADED ||
          second == display->atom__NET_WM_STATE_SHADED)
        {
          gboolean shade;
          guint32 timestamp;

          /* Stupid protocol has no timestamp; of course, shading
           * sucks anyway so who really cares that we're forced to do
           * a roundtrip here?
           */
          timestamp = meta_display_get_current_time_roundtrip (window->display);

          shade = (action == _NET_WM_STATE_ADD ||
                   (action == _NET_WM_STATE_TOGGLE && !window->shaded));
          if (shade && window->has_shade_func)
            meta_window_shade (window, timestamp);
          else
            meta_window_unshade (window, timestamp);
        }

      if (first == display->atom__NET_WM_STATE_FULLSCREEN ||
          second == display->atom__NET_WM_STATE_FULLSCREEN)
        {
          gboolean make_fullscreen;

          make_fullscreen = (action == _NET_WM_STATE_ADD ||
                             (action == _NET_WM_STATE_TOGGLE && !window->fullscreen));
          if (make_fullscreen && window->has_fullscreen_func)
            meta_window_make_fullscreen (window);
          else
            meta_window_unmake_fullscreen (window);
        }

      if (first == display->atom__NET_WM_STATE_MAXIMIZED_HORZ ||
          second == display->atom__NET_WM_STATE_MAXIMIZED_HORZ ||
          first == display->atom__NET_WM_STATE_MAXIMIZED_VERT ||
          second == display->atom__NET_WM_STATE_MAXIMIZED_VERT)
        {
          gboolean max;
          MetaMaximizeFlags directions = 0;

          max = (action == _NET_WM_STATE_ADD ||
                 (action == _NET_WM_STATE_TOGGLE &&
                  !window->maximized_horizontally));

          if (first == display->atom__NET_WM_STATE_MAXIMIZED_HORZ ||
              second == display->atom__NET_WM_STATE_MAXIMIZED_HORZ)
            directions |= META_MAXIMIZE_HORIZONTAL;

          if (first == display->atom__NET_WM_STATE_MAXIMIZED_VERT ||
              second == display->atom__NET_WM_STATE_MAXIMIZED_VERT)
            directions |= META_MAXIMIZE_VERTICAL;

          if (max && window->has_maximize_func)
            {
              if (meta_prefs_get_raise_on_click ())
                meta_window_raise (window);
              meta_window_maximize (window, directions);
            }
          else
            {
              if (meta_prefs_get_raise_on_click ())
                meta_window_raise (window);
              meta_window_unmaximize (window, directions);
            }
        }

      if (first == display->atom__NET_WM_STATE_MODAL ||
          second == display->atom__NET_WM_STATE_MODAL)
        {
          window->wm_state_modal =
            (action == _NET_WM_STATE_ADD) ||
            (action == _NET_WM_STATE_TOGGLE && !window->wm_state_modal);

          recalc_window_type (window);
          meta_window_queue(window, META_QUEUE_MOVE_RESIZE);
        }

      if (first == display->atom__NET_WM_STATE_SKIP_PAGER ||
          second == display->atom__NET_WM_STATE_SKIP_PAGER)
        {
          window->wm_state_skip_pager =
            (action == _NET_WM_STATE_ADD) ||
            (action == _NET_WM_STATE_TOGGLE && !window->skip_pager);

          recalc_window_features (window);
          set_net_wm_state (window);
        }

      if (first == display->atom__NET_WM_STATE_SKIP_TASKBAR ||
          second == display->atom__NET_WM_STATE_SKIP_TASKBAR)
        {
          window->wm_state_skip_taskbar =
            (action == _NET_WM_STATE_ADD) ||
            (action == _NET_WM_STATE_TOGGLE && !window->skip_taskbar);

          recalc_window_features (window);
          set_net_wm_state (window);
        }

      if (first == display->atom__NET_WM_STATE_ABOVE ||
          second == display->atom__NET_WM_STATE_ABOVE)
        {
          window->wm_state_above =
            (action == _NET_WM_STATE_ADD) ||
            (action == _NET_WM_STATE_TOGGLE && !window->wm_state_above);

          meta_window_update_layer (window);
          set_net_wm_state (window);
        }

      if (first == display->atom__NET_WM_STATE_BELOW ||
          second == display->atom__NET_WM_STATE_BELOW)
        {
          window->wm_state_below =
            (action == _NET_WM_STATE_ADD) ||
            (action == _NET_WM_STATE_TOGGLE && !window->wm_state_below);

          meta_window_update_layer (window);
          set_net_wm_state (window);
        }

      if (first == display->atom__NET_WM_STATE_DEMANDS_ATTENTION ||
          second == display->atom__NET_WM_STATE_DEMANDS_ATTENTION)
        {
          if ((action == _NET_WM_STATE_ADD) ||
              (action == _NET_WM_STATE_TOGGLE && !window->wm_state_demands_attention))
            meta_window_set_demands_attention (window);
          else
            meta_window_unset_demands_attention (window);
        }

       if (first == display->atom__NET_WM_STATE_STICKY ||
          second == display->atom__NET_WM_STATE_STICKY)
        {
          if ((action == _NET_WM_STATE_ADD) ||
              (action == _NET_WM_STATE_TOGGLE && !window->on_all_workspaces))
            meta_window_stick (window);
          else
            meta_window_unstick (window);
        }

      return TRUE;
    }
  else if (event->xclient.message_type ==
           display->atom_WM_CHANGE_STATE)
    {
      meta_verbose ("WM_CHANGE_STATE client message, state: %ld\n",
                    event->xclient.data.l[0]);
      if (event->xclient.data.l[0] == IconicState &&
          window->has_minimize_func)
        meta_window_minimize (window);

      return TRUE;
    }
  else if (event->xclient.message_type ==
           display->atom__NET_WM_MOVERESIZE)
    {
      int x_root;
      int y_root;
      int action;
      MetaGrabOp op;
      int button;
      guint32 timestamp;

      /* _NET_WM_MOVERESIZE messages are almost certainly going to come from
       * clients when users click on the fake "frame" that the client has,
       * thus we should also treat such messages as though it were a
       * "frame action".
       */
      gboolean const frame_action = TRUE;

      x_root = event->xclient.data.l[0];
      y_root = event->xclient.data.l[1];
      action = event->xclient.data.l[2];
      button = event->xclient.data.l[3];

      /* FIXME: What a braindead protocol; no timestamp?!? */
      timestamp = meta_display_get_current_time_roundtrip (display);
      meta_topic (META_DEBUG_WINDOW_OPS,
                  "Received _NET_WM_MOVERESIZE message on %s, %d,%d action = %d, button %d\n",
                  window->desc,
                  x_root, y_root, action, button);

      op = META_GRAB_OP_NONE;
      switch (action)
        {
        case _NET_WM_MOVERESIZE_SIZE_TOPLEFT:
          op = META_GRAB_OP_RESIZING_NW;
          break;
        case _NET_WM_MOVERESIZE_SIZE_TOP:
          op = META_GRAB_OP_RESIZING_N;
          break;
        case _NET_WM_MOVERESIZE_SIZE_TOPRIGHT:
          op = META_GRAB_OP_RESIZING_NE;
          break;
        case _NET_WM_MOVERESIZE_SIZE_RIGHT:
          op = META_GRAB_OP_RESIZING_E;
          break;
        case _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT:
          op = META_GRAB_OP_RESIZING_SE;
          break;
        case _NET_WM_MOVERESIZE_SIZE_BOTTOM:
          op = META_GRAB_OP_RESIZING_S;
          break;
        case _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT:
          op = META_GRAB_OP_RESIZING_SW;
          break;
        case _NET_WM_MOVERESIZE_SIZE_LEFT:
          op = META_GRAB_OP_RESIZING_W;
          break;
        case _NET_WM_MOVERESIZE_MOVE:
          op = META_GRAB_OP_MOVING;
          break;
        case _NET_WM_MOVERESIZE_SIZE_KEYBOARD:
          op = META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN;
          break;
        case _NET_WM_MOVERESIZE_MOVE_KEYBOARD:
          op = META_GRAB_OP_KEYBOARD_MOVING;
          break;
        case _NET_WM_MOVERESIZE_CANCEL:
          /* handled below */
          break;
        default:
          break;
        }

      if (action == _NET_WM_MOVERESIZE_CANCEL)
        {
          meta_display_end_grab_op (window->display, timestamp);
        }
      else if (op != META_GRAB_OP_NONE &&
          ((window->has_move_func && op == META_GRAB_OP_KEYBOARD_MOVING) ||
           (window->has_resize_func && op == META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN)))
        {
          meta_window_begin_grab_op (window, op, frame_action, timestamp);
        }
      else if (op != META_GRAB_OP_NONE &&
               ((window->has_move_func && op == META_GRAB_OP_MOVING) ||
               (window->has_resize_func &&
                (op != META_GRAB_OP_MOVING &&
                 op != META_GRAB_OP_KEYBOARD_MOVING))))
        {
          guint button_mask = 0;

          meta_topic (META_DEBUG_WINDOW_OPS,
                      "Beginning move/resize with button = %d\n", button);
          meta_display_begin_grab_op (window->display,
                                      window->screen,
                                      window,
                                      op,
                                      FALSE,
                                      frame_action,
                                      button, 0,
                                      timestamp,
                                      x_root,
                                      y_root);

            {
              int dont_care;
              Window w_dont_care;

              /* The race conditions in this _NET_WM_MOVERESIZE thing
               * are mind-boggling
               */
              meta_error_trap_push (window->display);
              XQueryPointer (window->display->xdisplay,
                             window->xwindow,
                             &w_dont_care, &w_dont_care,
                             &dont_care, &dont_care,
                             &dont_care, &dont_care,
                             &button_mask);
              meta_error_trap_pop (window->display, TRUE);
            }

          if (button == 0)
            {
              /*
               * the button SHOULD already be included in the message
               */
              if ((button_mask & Button1Mask) != 0)
                button = 1;
              else if ((button_mask & Button2Mask) != 0)
                button = 2;
              else if ((button_mask & Button3Mask) != 0)
                button = 3;

              if (button != 0)
                window->display->grab_button = button;
              else
                meta_display_end_grab_op (window->display, timestamp);
            }
          else
            {
                meta_verbose ("button %d, button mask is %d\n", button, button_mask);
              if ((button_mask & (1 << (button+7))) == 0)
                meta_display_end_grab_op (window->display, timestamp);
            }

        }

      return TRUE;
    }
  else if (event->xclient.message_type ==
           display->atom__NET_MOVERESIZE_WINDOW)
    {
      int gravity;
      guint value_mask;

      gravity = (event->xclient.data.l[0] & 0xff);
      value_mask = (event->xclient.data.l[0] & 0xf00) >> 8;

      if (gravity == 0)
        gravity = window->size_hints.win_gravity;

      meta_window_move_resize_request(window,
                                      value_mask,
                                      gravity,
                                      event->xclient.data.l[1],  /* x */
                                      event->xclient.data.l[2],  /* y */
                                      event->xclient.data.l[3],  /* width */
                                      event->xclient.data.l[4]); /* height */
    }
  else if (event->xclient.message_type ==
           display->atom__NET_ACTIVE_WINDOW)
    {
      MetaClientType source_indication;
      guint32        timestamp;

      meta_verbose ("_NET_ACTIVE_WINDOW request for window '%s', activating\n",
                    window->desc);

      source_indication = event->xclient.data.l[0];
      timestamp = event->xclient.data.l[1];

      if (source_indication > META_CLIENT_TYPE_MAX_RECOGNIZED)
        source_indication = META_CLIENT_TYPE_UNKNOWN;

      if (timestamp == 0)
        {
          /* Client using older EWMH _NET_ACTIVE_WINDOW without a timestamp */
          meta_warning ("Buggy client sent a _NET_ACTIVE_WINDOW message with a "
                        "timestamp of 0 for %s\n",
                        window->desc);
          timestamp = meta_display_get_current_time (display);
        }

      // 在隐藏窗口模式下，不允许桌面类型的窗口Active
      if (window->type == META_WINDOW_DESKTOP
          && display->hiding_windows_mode)
        {
          return TRUE;
        }

      window_activate (window, timestamp, source_indication, NULL);
      return TRUE;
    }
  else if (event->xclient.message_type ==
           display->atom__NET_WM_FULLSCREEN_MONITORS)
    {
      gulong top, bottom, left, right;

      meta_verbose ("_NET_WM_FULLSCREEN_MONITORS request for window '%s'\n",
                    window->desc);

      top = event->xclient.data.l[0];
      bottom = event->xclient.data.l[1];
      left = event->xclient.data.l[2];
      right = event->xclient.data.l[3];

      meta_window_update_fullscreen_monitors (window, top, bottom, left, right);
    }
  else if (event->xclient.message_type ==
           display->atom__GTK_SHOW_WINDOW_MENU)
    {
      gulong x, y;
      guint32 timestamp;

      meta_verbose ("_GTK_SHOW_WINDOW_MENU request for window '%s'\n",
                    window->desc);

      /* event->xclient.data.l[0] is device_id */
      x = event->xclient.data.l[1];
      y = event->xclient.data.l[2];
      timestamp = meta_display_get_current_time_roundtrip (window->display);

      meta_window_show_menu (window, x, y, 1, timestamp);
    }

  return FALSE;
}

static void
meta_window_appears_focused_changed (MetaWindow *window)
{
  set_net_wm_state (window);

  if (window->frame)
    meta_frame_queue_draw (window->frame);
}

static void
check_ancestor_focus_appearance (MetaWindow *window)
{
  MetaWindow *parent = meta_window_get_transient_for (window);

  if (!meta_prefs_get_attach_modal_dialogs ())
    return;

  if (window->type != META_WINDOW_MODAL_DIALOG || !parent || parent == window)
    return;

  meta_window_appears_focused_changed (parent);

  check_ancestor_focus_appearance (parent);
}

gboolean
meta_window_notify_focus (MetaWindow *window,
                          XEvent     *event)
{
  /* note the event can be on either the window or the frame,
   * we focus the frame for shaded windows
   */

  /* The event can be FocusIn, FocusOut, or UnmapNotify.
   * On UnmapNotify we have to pretend it's focus out,
   * because we won't get a focus out if it occurs, apparently.
   */

  /* We ignore grabs, though this is questionable.
   * It may be better to increase the intelligence of
   * the focus window tracking.
   *
   * The problem is that keybindings for windows are done with
   * XGrabKey, which means focus_window disappears and the front of
   * the MRU list gets confused from what the user expects once a
   * keybinding is used.
   */
  XIEvent* input_event = meta_display_get_input_event(window->display, event);
  XIEnterEvent* enter_ev = (XIEnterEvent*)input_event;

  Window evwindow = event->xany.window;
  int ty = event->type;
  int mode = event->xfocus.mode;
  int detail = event->xfocus.detail;
  if (enter_ev) {
      if (input_event->evtype == XI_FocusIn) ty = FocusIn;
      else if (input_event->evtype == XI_FocusOut) ty = FocusOut;
      evwindow = enter_ev->event;
      mode = enter_ev->mode;
      detail = enter_ev->detail;
  }

  meta_topic (META_DEBUG_FOCUS,
              "Focus %s event received on %s 0x%lx (%s) "
              "mode %s detail %s\n",
              (enter_ev && ty == FocusIn) ? "in (xi)" :
              (enter_ev && ty == FocusOut) ? "out (xi)" :
              ty == FocusIn ? "in" :
              ty == FocusOut ? "out" :
              ty == UnmapNotify ? "unmap" :
              "???",
              window->desc, event->xany.window,
              evwindow == window->xwindow ?
              "client window" :
              (window->frame && evwindow == window->frame->xwindow) ?
              "frame window" :
              "unknown window",
              ty != UnmapNotify ?
              meta_event_mode_to_string (mode) : "n/a",
              ty != UnmapNotify ?
              meta_event_detail_to_string (detail) : "n/a");

  /* FIXME our pointer tracking is broken; see how
   * gtk+/gdk/x11/gdkevents-x11.c or XFree86/xc/programs/xterm/misc.c
   * handle it for the correct way.  In brief you need to track
   * pointer focus and regular focus, and handle EnterNotify in
   * PointerRoot mode with no window manager.  However as noted above,
   * accurate focus tracking will break things because we want to keep
   * windows "focused" when using keybindings on them, and also we
   * sometimes "focus" a window by focusing its frame or
   * no_focus_window; so this all needs rethinking massively.
   *
   * My suggestion is to change it so that we clearly separate
   * actual keyboard focus tracking using the xterm algorithm,
   * and metacity's "pretend" focus window, and go through all
   * the code and decide which one should be used in each place;
   * a hard bit is deciding on a policy for that.
   *
   * http://bugzilla.gnome.org/show_bug.cgi?id=90382
   */

  if ((ty == FocusIn || ty == FocusOut) &&
      (mode == NotifyGrab || mode == NotifyUngrab ||
       /* From WindowMaker, ignore all funky pointer root events */
       detail > NotifyNonlinearVirtual))
    {
      meta_topic (META_DEBUG_FOCUS,
                  "Ignoring focus event generated by a grab or other weirdness\n");
      return TRUE;
    }

  if (ty == FocusIn)
    {
      if (window != window->display->focus_window)
        {
          meta_topic (META_DEBUG_FOCUS,
                      "* Focus --> %s\n", window->desc);
          window->display->focus_window = window;
          window->has_focus = TRUE;
          meta_compositor_set_active_window (window->display->compositor,
                                             window->screen, window);

          /* Move to the front of the focusing workspace's MRU list.
           * We should only be "removing" it from the MRU list if it's
           * not already there.  Note that it's possible that we might
           * be processing this FocusIn after we've changed to a
           * different workspace; we should therefore update the MRU
           * list only if the window is actually on the active
           * workspace.
           */
          if (window->screen->active_workspace &&
              meta_window_located_on_workspace (window,
                                                window->screen->active_workspace))
            {
              GList* link;
              link = g_list_find (window->screen->active_workspace->mru_list,
                                  window);
              g_assert (link);

              window->screen->active_workspace->mru_list =
                g_list_remove_link (window->screen->active_workspace->mru_list,
                                    link);
              g_list_free (link);

              window->screen->active_workspace->mru_list =
                g_list_prepend (window->screen->active_workspace->mru_list,
                                window);
            }

          meta_window_appears_focused_changed (window);

          meta_error_trap_push (window->display);
          XInstallColormap (window->display->xdisplay,
                            window->colormap);
          meta_error_trap_pop (window->display, FALSE);

          /* move into FOCUSED_WINDOW layer */
          meta_window_update_layer (window);

          /* Ungrab click to focus button since the sync grab can interfere
           * with some things you might do inside the focused window, by
           * causing the client to get funky enter/leave events.
           *
           * The reason we usually have a passive grab on the window is
           * so that we can intercept clicks and raise the window in
           * response. For click-to-focus we don't need that since the
           * focused window is already raised. When raise_on_click is
           * FALSE we also don't need that since we don't do anything
           * when the window is clicked.
           *
           * There is dicussion in bugs 102209, 115072, and 461577
           */
          if (meta_prefs_get_focus_mode () == G_DESKTOP_FOCUS_MODE_CLICK ||
              !meta_prefs_get_raise_on_click())
            meta_display_ungrab_focus_window_button (window->display, window);

          /* parent window become active. */
          check_ancestor_focus_appearance (window);
        }
    }
  else if (ty == FocusOut || ty == UnmapNotify)
    {
      if (ty == FocusOut && detail == NotifyInferior)
        {
          /* This event means the client moved focus to a subwindow */
          meta_topic (META_DEBUG_FOCUS,
                      "Ignoring focus out on %s with NotifyInferior\n",
                      window->desc);
          return TRUE;
        }

      if (window == window->display->focus_window)
        {
          meta_topic (META_DEBUG_FOCUS,
                      "%s is now the previous focus window due to being focused out or unmapped\n",
                      window->desc);

          meta_topic (META_DEBUG_FOCUS,
                      "* Focus --> NULL (was %s)\n", window->desc);

          window->display->focus_window = NULL;
          window->has_focus = FALSE;

          /* parent window become active. */
          check_ancestor_focus_appearance (window);

          meta_window_appears_focused_changed (window);

          meta_compositor_set_active_window (window->display->compositor,
                                             window->screen, NULL);

          meta_error_trap_push (window->display);
          XUninstallColormap (window->display->xdisplay,
                              window->colormap);
          meta_error_trap_pop (window->display, FALSE);

          /* move out of FOCUSED_WINDOW layer */
          meta_window_update_layer (window);

          /* Re-grab for click to focus and raise-on-click, if necessary */
          if (meta_prefs_get_focus_mode () == G_DESKTOP_FOCUS_MODE_CLICK ||
              !meta_prefs_get_raise_on_click ())
            meta_display_grab_focus_window_button (window->display, window);
       }
    }

  /* Now set _NET_ACTIVE_WINDOW hint */
  meta_display_update_active_window_hint (window->display);

  return FALSE;
}

static gboolean
process_property_notify (MetaWindow     *window,
                         XPropertyEvent *event)
{
  Window xid = window->xwindow;

  if (meta_is_verbose ()) /* avoid looking up the name if we don't have to */
    {
      char *property_name = XGetAtomName (window->display->xdisplay,
                                          event->atom);

      meta_verbose ("Property notify on %s for %s\n",
                    window->desc, property_name);
      XFree (property_name);
    }

  if (event->atom == window->display->atom__NET_WM_USER_TIME &&
      window->user_time_window)
    {
      xid = window->user_time_window;
    }

  meta_window_reload_property_from_xwindow (window, xid, event->atom, FALSE);

  return TRUE;
}

static void
send_configure_notify (MetaWindow *window)
{
  XEvent event;

  /* from twm */

  event.type = ConfigureNotify;
  event.xconfigure.display = window->display->xdisplay;
  event.xconfigure.event = window->xwindow;
  event.xconfigure.window = window->xwindow;
  event.xconfigure.x = window->rect.x - window->border_width;
  event.xconfigure.y = window->rect.y - window->border_width;
  if (window->frame)
    {
      if (window->withdrawn)
        {
          MetaFrameBorders borders;
          /* We reparent the client window and put it to the position
           * where the visible top-left of the frame window currently is.
           */

          meta_frame_calc_borders (window->frame, &borders);

          event.xconfigure.x = window->frame->rect.x + borders.invisible.left;
          event.xconfigure.y = window->frame->rect.y + borders.invisible.top;
        }
      else
        {
          /* Need to be in root window coordinates */
          event.xconfigure.x += window->frame->rect.x;
          event.xconfigure.y += window->frame->rect.y;
        }
    }
  event.xconfigure.width = window->rect.width;
  event.xconfigure.height = window->rect.height;
  event.xconfigure.border_width = window->border_width; /* requested not actual */
  event.xconfigure.above = None; /* FIXME */
  event.xconfigure.override_redirect = False;

  meta_topic (META_DEBUG_GEOMETRY,
              "Sending synthetic configure notify to %s with x: %d y: %d w: %d h: %d\n",
              window->desc,
              event.xconfigure.x, event.xconfigure.y,
              event.xconfigure.width, event.xconfigure.height);

  meta_error_trap_push (window->display);
  XSendEvent (window->display->xdisplay,
              window->xwindow,
              False, StructureNotifyMask, &event);
  meta_error_trap_pop (window->display, FALSE);
}

gboolean
meta_window_get_icon_geometry (MetaWindow    *window,
                               MetaRectangle *rect)
{
  gulong *geometry = NULL;
  int nitems;

  if (meta_prop_get_cardinal_list (window->display,
                                   window->xwindow,
                                   window->display->atom__NET_WM_ICON_GEOMETRY,
                                   &geometry, &nitems))
    {
      if (nitems != 4)
        {
          meta_verbose ("_NET_WM_ICON_GEOMETRY on %s has %d values instead of 4\n",
                        window->desc, nitems);
          meta_XFree (geometry);
          return FALSE;
        }

      if (rect)
        {
          rect->x = geometry[0];
          rect->y = geometry[1];
          rect->width = geometry[2];
          rect->height = geometry[3];
        }

      meta_XFree (geometry);

      return TRUE;
    }

  return FALSE;
}

static Window
read_client_leader (MetaDisplay *display,
                    Window       xwindow)
{
  Window retval = None;

  meta_prop_get_window (display, xwindow,
                        display->atom_WM_CLIENT_LEADER,
                        &retval);

  return retval;
}

typedef struct
{
  Window leader;
} ClientLeaderData;

static gboolean
find_client_leader_func (MetaWindow *ancestor,
                         void       *data)
{
  ClientLeaderData *d;

  d = data;

  d->leader = read_client_leader (ancestor->display,
                                  ancestor->xwindow);

  /* keep going if no client leader found */
  return d->leader == None;
}

static void
update_sm_hints (MetaWindow *window)
{
  Window leader;

  window->xclient_leader = None;
  window->sm_client_id = NULL;

  /* If not on the current window, we can get the client
   * leader from transient parents. If we find a client
   * leader, we read the SM_CLIENT_ID from it.
   */
  leader = read_client_leader (window->display, window->xwindow);
  if (leader == None)
    {
      ClientLeaderData d;
      d.leader = None;
      meta_window_foreach_ancestor (window, find_client_leader_func,
                                    &d);
      leader = d.leader;
    }

  if (leader != None)
    {
      char *str;

      window->xclient_leader = leader;

      if (meta_prop_get_latin1_string (window->display, leader,
                                       window->display->atom_SM_CLIENT_ID,
                                       &str))
        {
          window->sm_client_id = g_strdup (str);
          meta_XFree (str);
        }
    }
  else
    {
      meta_verbose ("Didn't find a client leader for %s\n", window->desc);

      if (!meta_prefs_get_disable_workarounds ())
        {
          /* Some broken apps (kdelibs fault?) set SM_CLIENT_ID on the app
           * instead of the client leader
           */
          char *str;

          str = NULL;
          if (meta_prop_get_latin1_string (window->display, window->xwindow,
                                           window->display->atom_SM_CLIENT_ID,
                                           &str))
            {
              if (window->sm_client_id == NULL) /* first time through */
                meta_warning (_("Window %s sets SM_CLIENT_ID on itself, instead of on the WM_CLIENT_LEADER window as specified in the ICCCM.\n"),
                              window->desc);

              window->sm_client_id = g_strdup (str);
              meta_XFree (str);
            }
        }
    }

  meta_verbose ("Window %s client leader: 0x%lx SM_CLIENT_ID: '%s'\n",
                window->desc, window->xclient_leader,
                window->sm_client_id ? window->sm_client_id : "none");
}

static void
redraw_icon (MetaWindow *window)
{
  /* We could probably be smart and just redraw the icon here,
   * instead of the whole frame.
   */
  if (window->frame && (window->mapped || window->frame->mapped))
    meta_ui_queue_frame_draw (window->screen->ui, window->frame->xwindow);
}

void
meta_window_update_icon_now (MetaWindow *window)
{
  GdkPixbuf *icon;
  GdkPixbuf *mini_icon;

  icon = NULL;
  mini_icon = NULL;

  if (meta_read_icons (window->screen,
                       window->xwindow,
                       &window->icon_cache,
                       window->wm_hints_pixmap,
                       window->wm_hints_mask,
                       &icon,
                       META_ICON_WIDTH, META_ICON_HEIGHT,
                       &mini_icon,
                       META_MINI_ICON_WIDTH,
                       META_MINI_ICON_HEIGHT))
    {
      if (window->icon)
        g_object_unref (G_OBJECT (window->icon));

      if (window->mini_icon)
        g_object_unref (G_OBJECT (window->mini_icon));

      window->icon = icon;
      window->mini_icon = mini_icon;

      redraw_icon (window);
    }

  g_assert (window->icon);
  g_assert (window->mini_icon);
}

static gboolean
idle_update_icon (gpointer data)
{
  GSList *tmp;
  GSList *copy;
  guint queue_index = GPOINTER_TO_INT (data);

  meta_topic (META_DEBUG_GEOMETRY, "Clearing the update_icon queue\n");

  /* Work with a copy, for reentrancy. The allowed reentrancy isn't
   * complete; destroying a window while we're in here would result in
   * badness. But it's OK to queue/unqueue update_icons.
   */
  copy = g_slist_copy (queue_pending[queue_index]);
  g_slist_free (queue_pending[queue_index]);
  queue_pending[queue_index] = NULL;
  queue_idle[queue_index] = 0;

  destroying_windows_disallowed += 1;

  tmp = copy;
  while (tmp != NULL)
    {
      MetaWindow *window;

      window = tmp->data;

      meta_window_update_icon_now (window);
      window->is_in_queues &= ~META_QUEUE_UPDATE_ICON;

      tmp = tmp->next;
    }

  g_slist_free (copy);

  destroying_windows_disallowed -= 1;

  return FALSE;
}

GList*
meta_window_get_workspaces (MetaWindow *window)
{
  if (window->on_all_workspaces)
    return window->screen->workspaces;
  else
    return window->workspace->list_containing_self;
}

static void
invalidate_work_areas (MetaWindow *window)
{
  GList *tmp;

  tmp = meta_window_get_workspaces (window);

  while (tmp != NULL)
    {
      meta_workspace_invalidate_work_area (tmp->data);
      tmp = tmp->next;
    }
}

void
meta_window_update_struts (MetaWindow *window)
{
  GSList *old_struts;
  GSList *new_struts;
  GSList *old_iter, *new_iter;
  gulong *struts = NULL;
  int nitems;
  gboolean changed;

  meta_verbose ("Updating struts for %s\n", window->desc);

  old_struts = window->struts;
  new_struts = NULL;

  if (meta_prop_get_cardinal_list (window->display,
                                   window->xwindow,
                                   window->display->atom__NET_WM_STRUT_PARTIAL,
                                   &struts, &nitems))
    {
      if (nitems != 12)
        meta_verbose ("_NET_WM_STRUT_PARTIAL on %s has %d values instead "
                      "of 12\n",
                      window->desc, nitems);
      else
        {
          /* Pull out the strut info for each side in the hint */
          int i;
          for (i=0; i<4; i++)
            {
              MetaStrut *temp;
              int thickness, strut_begin, strut_end;

              thickness = struts[i];
              if (thickness == 0)
                continue;
              strut_begin = struts[4+(i*2)];
              strut_end   = struts[4+(i*2)+1];

              temp = g_new (MetaStrut, 1);
              temp->side = 1 << i; /* See MetaSide def.  Matches nicely, eh? */
              temp->rect = window->screen->rect;
              switch (temp->side)
                {
                case META_SIDE_RIGHT:
                  temp->rect.x = BOX_RIGHT(temp->rect) - thickness;
                  /* Intentionally fall through without breaking */
                case META_SIDE_LEFT:
                  temp->rect.width  = thickness;
                  temp->rect.y      = strut_begin;
                  temp->rect.height = strut_end - strut_begin + 1;
                  break;
                case META_SIDE_BOTTOM:
                  temp->rect.y = BOX_BOTTOM(temp->rect) - thickness;
                  /* Intentionally fall through without breaking */
                case META_SIDE_TOP:
                  temp->rect.height = thickness;
                  temp->rect.x      = strut_begin;
                  temp->rect.width  = strut_end - strut_begin + 1;
                  break;
                default:
                  g_assert_not_reached ();
                }

              new_struts = g_slist_prepend (new_struts, temp);
            }

          meta_verbose ("_NET_WM_STRUT_PARTIAL struts %lu %lu %lu %lu for "
                        "window %s\n",
                        struts[0], struts[1], struts[2], struts[3],
                        window->desc);
        }
      meta_XFree (struts);
    }
  else
    {
      meta_verbose ("No _NET_WM_STRUT property for %s\n",
                    window->desc);
    }

  if (!new_struts &&
      meta_prop_get_cardinal_list (window->display,
                                   window->xwindow,
                                   window->display->atom__NET_WM_STRUT,
                                   &struts, &nitems))
    {
      if (nitems != 4)
        meta_verbose ("_NET_WM_STRUT on %s has %d values instead of 4\n",
                      window->desc, nitems);
      else
        {
          /* Pull out the strut info for each side in the hint */
          int i;
          for (i=0; i<4; i++)
            {
              MetaStrut *temp;
              int thickness;

              thickness = struts[i];
              if (thickness == 0)
                continue;

              temp = g_new (MetaStrut, 1);
              temp->side = 1 << i;
              temp->rect = window->screen->rect;
              switch (temp->side)
                {
                case META_SIDE_RIGHT:
                  temp->rect.x = BOX_RIGHT(temp->rect) - thickness;
                  /* Intentionally fall through without breaking */
                case META_SIDE_LEFT:
                  temp->rect.width  = thickness;
                  break;
                case META_SIDE_BOTTOM:
                  temp->rect.y = BOX_BOTTOM(temp->rect) - thickness;
                  /* Intentionally fall through without breaking */
                case META_SIDE_TOP:
                  temp->rect.height = thickness;
                  break;
                default:
                  g_assert_not_reached ();
                }

              new_struts = g_slist_prepend (new_struts, temp);
            }

          meta_verbose ("_NET_WM_STRUT struts %lu %lu %lu %lu for window %s\n",
                        struts[0], struts[1], struts[2], struts[3],
                        window->desc);
        }
      meta_XFree (struts);
    }
  else if (!new_struts)
    {
      meta_verbose ("No _NET_WM_STRUT property for %s\n",
                    window->desc);
    }

  /* Determine whether old_struts and new_struts are the same */
  old_iter = old_struts;
  new_iter = new_struts;
  while (old_iter && new_iter)
    {
      MetaStrut *old_strut = (MetaStrut*) old_iter->data;
      MetaStrut *new_strut = (MetaStrut*) new_iter->data;

      if (old_strut->side != new_strut->side ||
          !meta_rectangle_equal (&old_strut->rect, &new_strut->rect))
        break;

      old_iter = old_iter->next;
      new_iter = new_iter->next;
    }
  changed = (old_iter != NULL || new_iter != NULL);

  /* Update appropriately */
  meta_free_gslist_and_elements (old_struts);
  window->struts = new_struts;
  if (changed)
    {
      meta_topic (META_DEBUG_WORKAREA,
                  "Invalidating work areas of window %s due to struts update\n",
                  window->desc);
      invalidate_work_areas (window);
    }
  else
    {
      meta_topic (META_DEBUG_WORKAREA,
                  "Struts on %s were unchanged\n", window->desc);
    }
}

void
meta_window_recalc_window_type (MetaWindow *window)
{
  recalc_window_type (window);
}

static void
recalc_window_type (MetaWindow *window)
{
  MetaWindowType old_type;

  old_type = window->type;

  if (window->type_atom != None)
    {
      if (window->type_atom  == window->display->atom__NET_WM_WINDOW_TYPE_DESKTOP)
        window->type = META_WINDOW_DESKTOP;
      else if (window->type_atom  == window->display->atom__NET_WM_WINDOW_TYPE_DOCK)
        window->type = META_WINDOW_DOCK;
      else if (window->type_atom  == window->display->atom__NET_WM_WINDOW_TYPE_TOOLBAR)
        window->type = META_WINDOW_TOOLBAR;
      else if (window->type_atom  == window->display->atom__NET_WM_WINDOW_TYPE_MENU)
        window->type = META_WINDOW_MENU;
      else if (window->type_atom  == window->display->atom__NET_WM_WINDOW_TYPE_DIALOG)
        window->type = META_WINDOW_DIALOG;
      else if (window->type_atom  == window->display->atom__NET_WM_WINDOW_TYPE_NORMAL)
        window->type = META_WINDOW_NORMAL;
      else if (window->type_atom  == window->display->atom__NET_WM_WINDOW_TYPE_UTILITY)
        window->type = META_WINDOW_UTILITY;
      else if (window->type_atom  == window->display->atom__NET_WM_WINDOW_TYPE_SPLASH)
        window->type = META_WINDOW_SPLASHSCREEN;
      else
        meta_bug ("Set a type atom for %s that wasn't handled in recalc_window_type\n",
                  window->desc);
    }
  else if (window->xtransient_for != None)
    {
      window->type = META_WINDOW_DIALOG;
    }
  else
    {
      window->type = META_WINDOW_NORMAL;
    }

  if (window->type == META_WINDOW_DIALOG &&
      window->wm_state_modal)
    window->type = META_WINDOW_MODAL_DIALOG;

  meta_verbose ("Calculated type %u for %s, old type %u\n",
                window->type, window->desc, old_type);

  if (old_type != window->type)
    {
      recalc_window_features (window);

      set_net_wm_state (window);

      /* Update frame */
      if (window->decorated)
        meta_window_ensure_frame (window);
      else
        meta_window_destroy_frame (window);

      /* update stacking constraints */
      meta_window_update_layer (window);

      meta_window_grab_keys (window);
    }
}

static void
set_allowed_actions_hint (MetaWindow *window)
{
#define MAX_N_ACTIONS 12
  unsigned long data[MAX_N_ACTIONS];
  int i;

  i = 0;
  if (window->has_move_func)
    {
      data[i] = window->display->atom__NET_WM_ACTION_MOVE;
      ++i;
    }
  if (window->has_resize_func)
    {
      data[i] = window->display->atom__NET_WM_ACTION_RESIZE;
      ++i;
    }
  if (window->has_fullscreen_func)
    {
      data[i] = window->display->atom__NET_WM_ACTION_FULLSCREEN;
      ++i;
    }
  if (window->has_minimize_func)
    {
      data[i] = window->display->atom__NET_WM_ACTION_MINIMIZE;
      ++i;
    }
  if (window->has_shade_func)
    {
      data[i] = window->display->atom__NET_WM_ACTION_SHADE;
      ++i;
    }
  /* sticky according to EWMH is different from metacity's sticky;
   * metacity doesn't support EWMH sticky
   */
  if (window->has_maximize_func)
    {
      data[i] = window->display->atom__NET_WM_ACTION_MAXIMIZE_HORZ;
      ++i;
      data[i] = window->display->atom__NET_WM_ACTION_MAXIMIZE_VERT;
      ++i;
    }
  /* We always allow this */
  data[i] = window->display->atom__NET_WM_ACTION_CHANGE_DESKTOP;
  ++i;
  if (window->has_close_func)
    {
      data[i] = window->display->atom__NET_WM_ACTION_CLOSE;
      ++i;
    }

  /* I guess we always allow above/below operations */
  data[i] = window->display->atom__NET_WM_ACTION_ABOVE;
  ++i;
  data[i] = window->display->atom__NET_WM_ACTION_BELOW;
  ++i;

  g_assert (i <= MAX_N_ACTIONS);

  meta_verbose ("Setting _NET_WM_ALLOWED_ACTIONS with %d atoms\n", i);

  meta_error_trap_push (window->display);
  XChangeProperty (window->display->xdisplay, window->xwindow,
                   window->display->atom__NET_WM_ALLOWED_ACTIONS,
                   XA_ATOM,
                   32, PropModeReplace, (guchar*) data, i);
  meta_error_trap_pop (window->display, FALSE);
#undef MAX_N_ACTIONS
}

void
meta_window_recalc_features (MetaWindow *window)
{
  recalc_window_features (window);
}

static void
recalc_window_features (MetaWindow *window)
{
  gboolean old_has_close_func;
  gboolean old_has_minimize_func;
  gboolean old_has_move_func;
  gboolean old_has_resize_func;
  gboolean old_has_shade_func;
  gboolean old_always_sticky;

  old_has_close_func = window->has_close_func;
  old_has_minimize_func = window->has_minimize_func;
  old_has_move_func = window->has_move_func;
  old_has_resize_func = window->has_resize_func;
  old_has_shade_func = window->has_shade_func;
  old_always_sticky = window->always_sticky;

  /* Use MWM hints initially */
  window->decorated = window->mwm_decorated;
  window->border_only = window->mwm_border_only;
  window->has_close_func = window->mwm_has_close_func;
  window->has_minimize_func = window->mwm_has_minimize_func;
  window->has_maximize_func = window->mwm_has_maximize_func;
  window->has_move_func = window->mwm_has_move_func;

  window->has_resize_func = TRUE;

  /* If min_size == max_size, then don't allow resize */
  if (window->size_hints.min_width == window->size_hints.max_width &&
      window->size_hints.min_height == window->size_hints.max_height)
    window->has_resize_func = FALSE;
  else if (!window->mwm_has_resize_func)
    {
      /* We ignore mwm_has_resize_func because WM_NORMAL_HINTS is the
       * authoritative source for that info. Some apps such as mplayer or
       * xine disable resize via MWM but not WM_NORMAL_HINTS, but that
       * leads to e.g. us not fullscreening their windows.  Apps that set
       * MWM but not WM_NORMAL_HINTS are basically broken. We complain
       * about these apps but make them work.
       */

      meta_warning (_("Window %s sets an MWM hint indicating it isn't resizable, but sets min size %d x %d and max size %d x %d; this doesn't make much sense.\n"),
                    window->desc,
                    window->size_hints.min_width,
                    window->size_hints.min_height,
                    window->size_hints.max_width,
                    window->size_hints.max_height);
    }

  window->has_shade_func = TRUE;
  window->has_fullscreen_func = TRUE;

  window->always_sticky = FALSE;

  /* Semantic category overrides the MWM hints */
  if (window->type == META_WINDOW_TOOLBAR)
    window->decorated = FALSE;

  if (window->type == META_WINDOW_MODAL_DIALOG && meta_prefs_get_attach_modal_dialogs ())
    {
      MetaWindow *parent = meta_window_get_transient_for (window);
      if (parent)
        {
          window->has_resize_func = FALSE;
          window->border_only = TRUE;
        }
    }

  if (window->type == META_WINDOW_DESKTOP ||
      window->type == META_WINDOW_DOCK)
    window->always_sticky = TRUE;

  if (window->type == META_WINDOW_DESKTOP ||
      window->type == META_WINDOW_DOCK ||
      window->type == META_WINDOW_SPLASHSCREEN)
    {
      window->decorated = FALSE;
      window->has_close_func = FALSE;
      window->has_shade_func = FALSE;

      /* FIXME this keeps panels and things from using
       * NET_WM_MOVERESIZE; the problem is that some
       * panels (edge panels) have fixed possible locations,
       * and others ("floating panels") do not.
       *
       * Perhaps we should require edge panels to explicitly
       * disable movement?
       */
      window->has_move_func = FALSE;
      window->has_resize_func = FALSE;
    }

  if (window->type != META_WINDOW_NORMAL)
    {
      window->has_minimize_func = FALSE;
      window->has_maximize_func = FALSE;
      window->has_fullscreen_func = FALSE;
    }

  if (!window->has_resize_func)
    {
      window->has_maximize_func = FALSE;

      /* don't allow fullscreen if we can't resize, unless the size
       * is entire screen size (kind of broken, because we
       * actually fullscreen to xinerama head size not screen size)
       */
      if (window->size_hints.min_width == window->screen->rect.width &&
          window->size_hints.min_height == window->screen->rect.height)
        ; /* leave fullscreen available */
      else
        window->has_fullscreen_func = FALSE;
    }

  /* We leave fullscreen windows decorated, just push the frame outside
   * the screen. This avoids flickering to unparent them.
   *
   * Note that setting has_resize_func = FALSE here must come after the
   * above code that may disable fullscreen, because if the window
   * is not resizable purely due to fullscreen, we don't want to
   * disable fullscreen mode.
   */
  if (window->fullscreen)
    {
      window->has_shade_func = FALSE;
      window->has_move_func = FALSE;
      window->has_resize_func = FALSE;
      window->has_maximize_func = FALSE;
    }

  meta_topic (META_DEBUG_WINDOW_OPS,
              "Window %s fullscreen = %d not resizable, maximizable = %d fullscreenable = %d min size %dx%d max size %dx%d\n",
              window->desc,
              window->fullscreen,
              window->has_maximize_func, window->has_fullscreen_func,
              window->size_hints.min_width,
              window->size_hints.min_height,
              window->size_hints.max_width,
              window->size_hints.max_height);

  /* no shading if not decorated */
  if (!window->decorated || window->border_only)
    window->has_shade_func = FALSE;

  window->skip_taskbar = FALSE;
  window->skip_pager = FALSE;

  if (window->wm_state_skip_taskbar)
    window->skip_taskbar = TRUE;

  if (window->wm_state_skip_pager)
    window->skip_pager = TRUE;

  switch (window->type)
    {
      /* Force skip taskbar/pager on these window types */
    case META_WINDOW_DESKTOP:
    case META_WINDOW_DOCK:
    case META_WINDOW_TOOLBAR:
    case META_WINDOW_MENU:
    case META_WINDOW_UTILITY:
    case META_WINDOW_SPLASHSCREEN:
      window->skip_taskbar = TRUE;
      window->skip_pager = TRUE;
      break;

    case META_WINDOW_DIALOG:
    case META_WINDOW_MODAL_DIALOG:
      /* only skip taskbar if we have a real transient parent */
      if (window->xtransient_for != None &&
          window->xtransient_for != window->screen->xroot)
        window->skip_taskbar = TRUE;
      break;

    case META_WINDOW_NORMAL:
      break;

    default:
      break;
    }

  meta_topic (META_DEBUG_WINDOW_OPS,
              "Window %s decorated = %d border_only = %d has_close = %d has_minimize = %d has_maximize = %d has_move = %d has_shade = %d skip_taskbar = %d skip_pager = %d\n",
              window->desc,
              window->decorated,
              window->border_only,
              window->has_close_func,
              window->has_minimize_func,
              window->has_maximize_func,
              window->has_move_func,
              window->has_shade_func,
              window->skip_taskbar,
              window->skip_pager);

  /* FIXME:
   * Lame workaround for recalc_window_features
   * being used overzealously. The fix is to
   * only recalc_window_features when something
   * has actually changed.
   */
  if (window->constructing                               ||
      old_has_close_func != window->has_close_func       ||
      old_has_minimize_func != window->has_minimize_func ||
      old_has_move_func != window->has_move_func         ||
      old_has_resize_func != window->has_resize_func     ||
      old_has_shade_func != window->has_shade_func       ||
      old_always_sticky != window->always_sticky)
    set_allowed_actions_hint (window);

  /* FIXME perhaps should ensure if we don't have a shade func,
   * we aren't shaded, etc.
   */
}

static void
menu_callback (DeepinWindowMenu *menu,
               Display        *xdisplay,
               Window          client_xwindow,
               guint32         timestamp,
               MetaMenuOp      op,
               int             workspace_index,
               gpointer        data)
{
  MetaDisplay *display;
  MetaWindow *window;
  MetaWorkspace *workspace;

  display = meta_display_for_x_display (xdisplay);
  window = meta_display_lookup_x_window (display, client_xwindow);
  workspace = NULL;

  if (window != NULL) /* window can be NULL */
    {
      meta_verbose ("Menu op %u on %s\n", op, window->desc);

      switch (op)
        {
        case META_MENU_OP_NONE:
          /* nothing */
          break;

        case META_MENU_OP_DELETE:
          meta_window_delete (window, timestamp);
          break;

        case META_MENU_OP_MINIMIZE:
          meta_window_minimize (window);
          break;

        case META_MENU_OP_UNMAXIMIZE:
          meta_window_unmaximize (window,
                                  META_MAXIMIZE_HORIZONTAL |
                                  META_MAXIMIZE_VERTICAL);
          break;

        case META_MENU_OP_MAXIMIZE:
          meta_window_maximize (window,
                                META_MAXIMIZE_HORIZONTAL |
                                META_MAXIMIZE_VERTICAL);
          break;

        case META_MENU_OP_UNSHADE:
          meta_window_unshade (window, timestamp);
          break;

        case META_MENU_OP_SHADE:
          meta_window_shade (window, timestamp);
          break;

        case META_MENU_OP_MOVE_LEFT:
          workspace = meta_workspace_get_neighbor (window->screen->active_workspace,
                                                   META_MOTION_LEFT);
          break;

        case META_MENU_OP_MOVE_RIGHT:
          workspace = meta_workspace_get_neighbor (window->screen->active_workspace,
                                                   META_MOTION_RIGHT);
          break;

        case META_MENU_OP_MOVE_UP:
          workspace = meta_workspace_get_neighbor (window->screen->active_workspace,
                                                   META_MOTION_UP);
          break;

        case META_MENU_OP_MOVE_DOWN:
          workspace = meta_workspace_get_neighbor (window->screen->active_workspace,
                                                   META_MOTION_DOWN);
          break;

        case META_MENU_OP_WORKSPACES:
          workspace = meta_screen_get_workspace_by_index (window->screen,
                                                          workspace_index);
          break;

        case META_MENU_OP_STICK:
          meta_window_stick (window);
          break;

        case META_MENU_OP_UNSTICK:
          meta_window_unstick (window);
          break;

        case META_MENU_OP_ABOVE:
        case META_MENU_OP_UNABOVE:
          if (window->wm_state_above == FALSE)
            meta_window_make_above (window);
          else
            meta_window_unmake_above (window);
          break;

        case META_MENU_OP_MOVE:
          meta_window_begin_grab_op (window,
                                     META_GRAB_OP_KEYBOARD_MOVING,
                                     TRUE,
                                     timestamp);
          break;

        case META_MENU_OP_RESIZE:
          meta_window_begin_grab_op (window,
                                     META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN,
                                     TRUE,
                                     timestamp);
          break;

        case META_MENU_OP_RECOVER:
          meta_window_shove_titlebar_onscreen (window);
          break;

        default:
          meta_warning (G_STRLOC": Unknown window op\n");
          break;
        }

      if (workspace)
	{
	  meta_window_change_workspace (window,
					workspace);
#if 0
	  meta_workspace_activate (workspace);
	  meta_window_raise (window);
#endif
	}
    }
  else
    {
      meta_verbose ("Menu callback on nonexistent window\n");
    }

  if (display->window_menu == menu)
    {
      display->window_menu = NULL;
      display->window_with_menu = NULL;
    }

  meta_ui_window_menu_free (menu);
}

void
meta_window_show_menu (MetaWindow *window,
                       int         root_x,
                       int         root_y,
                       int         button,
                       guint32     timestamp)
{
  MetaMenuOp ops;
  MetaMenuOp insensitive;
  DeepinWindowMenu *menu;
  MetaWorkspaceLayout layout;
  int n_workspaces;
  gboolean ltr;

  if (window->display->window_menu)
    {
      meta_ui_window_menu_free (window->display->window_menu);
      window->display->window_menu = NULL;
      window->display->window_with_menu = NULL;
    }

  ops = META_MENU_OP_NONE;
  insensitive = META_MENU_OP_NONE;

  ops |= (META_MENU_OP_DELETE | META_MENU_OP_MINIMIZE | META_MENU_OP_MOVE | META_MENU_OP_RESIZE);

  if (!meta_window_titlebar_is_onscreen (window) &&
      window->type != META_WINDOW_DOCK &&
      window->type != META_WINDOW_DESKTOP)
    ops |= META_MENU_OP_RECOVER;

  n_workspaces = meta_screen_get_n_workspaces (window->screen);

  if (n_workspaces > 1)
    ops |= META_MENU_OP_WORKSPACES;

  meta_screen_calc_workspace_layout (window->screen,
                                     n_workspaces,
                                     meta_workspace_index ( window->screen->active_workspace),
                                     &layout);

  if (!window->on_all_workspaces)
    {
      ltr = meta_ui_get_direction() == META_UI_DIRECTION_LTR;

      if (layout.current_col > 0)
        ops |= ltr ? META_MENU_OP_MOVE_LEFT : META_MENU_OP_MOVE_RIGHT;
      if ((layout.current_col < layout.cols - 1) &&
          (layout.current_row * layout.cols + (layout.current_col + 1) < n_workspaces))
        ops |= ltr ? META_MENU_OP_MOVE_RIGHT : META_MENU_OP_MOVE_LEFT;
      if (layout.current_row > 0)
        ops |= META_MENU_OP_MOVE_UP;
      if ((layout.current_row < layout.rows - 1) &&
          ((layout.current_row + 1) * layout.cols + layout.current_col < n_workspaces))
        ops |= META_MENU_OP_MOVE_DOWN;
    }

  meta_screen_free_workspace_layout (&layout);

  if (META_WINDOW_MAXIMIZED (window))
    ops |= META_MENU_OP_UNMAXIMIZE;
  else
    ops |= META_MENU_OP_MAXIMIZE;

#if 0
  if (window->shaded)
    ops |= META_MENU_OP_UNSHADE;
  else
    ops |= META_MENU_OP_SHADE;
#endif

  if (window->on_all_workspaces)
    ops |= META_MENU_OP_UNSTICK;
  else
    ops |= META_MENU_OP_STICK;

  if (window->wm_state_above)
    ops |= META_MENU_OP_UNABOVE;
  else
    ops |= META_MENU_OP_ABOVE;

  if (!window->has_maximize_func)
    insensitive |= META_MENU_OP_UNMAXIMIZE | META_MENU_OP_MAXIMIZE;

  if (!window->has_minimize_func)
    insensitive |= META_MENU_OP_MINIMIZE;

  if (!window->has_close_func)
    insensitive |= META_MENU_OP_DELETE;

  if (!window->has_shade_func)
    insensitive |= META_MENU_OP_SHADE | META_MENU_OP_UNSHADE;

  if (!META_WINDOW_ALLOWS_MOVE (window))
    insensitive |= META_MENU_OP_MOVE;

  if (!META_WINDOW_ALLOWS_RESIZE (window))
    insensitive |= META_MENU_OP_RESIZE;

   if (window->always_sticky)
     insensitive |= META_MENU_OP_STICK | META_MENU_OP_UNSTICK | META_MENU_OP_WORKSPACES;

  if ((window->type == META_WINDOW_DESKTOP) ||
      (window->type == META_WINDOW_DOCK) ||
      (window->type == META_WINDOW_SPLASHSCREEN))
    insensitive |= 0xFFFFFFFF;

  /* If all operations are disabled, just quit without showing the menu.
   * This is the case, for example, with META_WINDOW_DESKTOP windows.
   */
  if ((ops & ~insensitive) == 0)
    return;

  menu =
    meta_ui_window_menu_new (window->screen->ui,
                             window->xwindow,
                             ops,
                             insensitive,
                             meta_window_get_net_wm_desktop (window),
                             meta_screen_get_n_workspaces (window->screen),
                             menu_callback,
                             NULL);

  window->display->window_menu = menu;
  window->display->window_with_menu = window;

  meta_verbose ("Popping up window menu for %s\n", window->desc);

  meta_ui_window_menu_popup (menu, root_x, root_y, button, timestamp);
}

void
meta_window_shove_titlebar_onscreen (MetaWindow *window)
{
  MetaRectangle  outer_rect;
  GList         *onscreen_region;
  int            horiz_amount, vert_amount;
  int            newx, newy;

  /* If there's no titlebar, don't bother */
  if (!window->frame)
    return;

  /* Get the basic info we need */
  meta_window_get_outer_rect (window, &outer_rect);
  onscreen_region = window->screen->active_workspace->screen_region;

  /* Extend the region (just in case the window is too big to fit on the
   * screen), then shove the window on screen, then return the region to
   * normal.
   */
  horiz_amount = outer_rect.width;
  vert_amount  = outer_rect.height;
  meta_rectangle_expand_region (onscreen_region,
                                horiz_amount,
                                horiz_amount,
                                0,
                                vert_amount);
  meta_rectangle_shove_into_region(onscreen_region,
                                   FIXED_DIRECTION_X,
                                   &outer_rect);
  meta_rectangle_expand_region (onscreen_region,
                                -horiz_amount,
                                -horiz_amount,
                                0,
                                -vert_amount);

  newx = outer_rect.x + window->frame->child_x;
  newy = outer_rect.y + window->frame->child_y;
  meta_window_move_resize (window,
                           FALSE,
                           newx,
                           newy,
                           window->rect.width,
                           window->rect.height);
}

gboolean
meta_window_titlebar_is_onscreen (MetaWindow *window)
{
  MetaRectangle  titlebar_rect;
  GList         *onscreen_region;
  gboolean       is_onscreen;

  const int min_height_needed  = 8;
  const int min_width_percent  = 0.5;
  const int min_width_absolute = 50;

  /* Titlebar can't be offscreen if there is no titlebar... */
  if (!window->frame)
    return FALSE;

  /* Get the rectangle corresponding to the titlebar */
  meta_window_get_titlebar_rect (window, &titlebar_rect);

  /* Run through the spanning rectangles for the screen and see if one of
   * them overlaps with the titlebar sufficiently to consider it onscreen.
   */
  is_onscreen = FALSE;
  onscreen_region = window->screen->active_workspace->screen_region;
  while (onscreen_region)
    {
      MetaRectangle *spanning_rect = onscreen_region->data;
      MetaRectangle overlap;

      meta_rectangle_intersect (&titlebar_rect, spanning_rect, &overlap);
      if (overlap.height > MIN (titlebar_rect.height, min_height_needed) &&
          overlap.width  > MIN (titlebar_rect.width * min_width_percent,
                                min_width_absolute))
        {
          is_onscreen = TRUE;
          break;
        }

      onscreen_region = onscreen_region->next;
    }

  return is_onscreen;
}

static double
timeval_to_ms (const GTimeVal *timeval)
{
  return (timeval->tv_sec * G_USEC_PER_SEC + timeval->tv_usec) / 1000.0;
}

static double
time_diff (const GTimeVal *first,
	   const GTimeVal *second)
{
  double first_ms = timeval_to_ms (first);
  double second_ms = timeval_to_ms (second);

  return first_ms - second_ms;
}

static gboolean
check_moveresize_frequency (MetaWindow *window,
			    gdouble    *remaining)
{
  GTimeVal current_time;

  g_get_current_time (&current_time);

  if (!window->disable_sync &&
      window->display->grab_sync_request_alarm != None)
    {
      if (window->sync_request_time.tv_sec != 0 ||
	  window->sync_request_time.tv_usec != 0)
	{
	  double elapsed =
	    time_diff (&current_time, &window->sync_request_time);

	  if (elapsed < 200.0)
	    {
	      /* We want to be sure that the timeout happens at
	       * a time where elapsed will definitely be
	       * greater than 200, so we can disable sync
	       */
	      if (remaining)
		*remaining = 200.0 - elapsed + 100;

	      return FALSE;
	    }
	  else
	    {
	      /* We have now waited for more than a second for the
	       * application to respond to the sync request
	       */
	      window->disable_sync = TRUE;
	      return TRUE;
	    }
	}
      else
	{
	  /* No outstanding sync requests. Go ahead and resize
	   */
	  return TRUE;
	}
    }
  else
    {
      const double max_resizes_per_second = 25.0;
      const double ms_between_resizes = 1000.0 / max_resizes_per_second;
      double elapsed;

      elapsed = time_diff (&current_time, &window->display->grab_last_moveresize_time);

      if (elapsed >= 0.0 && elapsed < ms_between_resizes)
	{
	  meta_topic (META_DEBUG_RESIZING,
		      "Delaying move/resize as only %g of %g ms elapsed\n",
		      elapsed, ms_between_resizes);

	  if (remaining)
	    *remaining = (ms_between_resizes - elapsed);

	  return FALSE;
	}

      meta_topic (META_DEBUG_RESIZING,
		  " Checked moveresize freq, allowing move/resize now (%g of %g seconds elapsed)\n",
		  elapsed / 1000.0, 1.0 / max_resizes_per_second);

      return TRUE;
    }
}

static gboolean
update_move_timeout (gpointer data)
{
  MetaWindow *window = data;

  update_move (window,
               window->display->grab_last_user_action_was_snap,
               window->display->grab_latest_motion_x,
               window->display->grab_latest_motion_y);

  return FALSE;
}

static void
update_move (MetaWindow  *window,
             gboolean     snap,
             int          x,
             int          y)
{
  int dx, dy;
  int new_x, new_y;
  MetaRectangle old;
  int shake_threshold;
  MetaDisplay *display = window->display;

  display->grab_latest_motion_x = x;
  display->grab_latest_motion_y = y;

  dx = x - display->grab_anchor_root_x;
  dy = y - display->grab_anchor_root_y;

  new_x = display->grab_anchor_window_pos.x + dx;
  new_y = display->grab_anchor_window_pos.y + dy;

  meta_verbose ("x,y = %d,%d anchor ptr %d,%d anchor pos %d,%d dx,dy %d,%d\n",
                x, y,
                display->grab_anchor_root_x,
                display->grab_anchor_root_y,
                display->grab_anchor_window_pos.x,
                display->grab_anchor_window_pos.y,
                dx, dy);

  /* Don't bother doing anything if no move has been specified.  (This
   * happens often, even in keyboard moving, due to the warping of the
   * pointer.
   */
  if (dx == 0 && dy == 0)
    return;

  /* Originally for detaching maximized windows, but we use this
   * for the zones at the sides of the monitor where trigger tiling
   * because it's about the right size
   */

#define DRAG_THRESHOLD_TO_SHAKE_THRESHOLD_FACTOR 6
  shake_threshold = meta_ui_get_drag_threshold (window->screen->ui) *
    DRAG_THRESHOLD_TO_SHAKE_THRESHOLD_FACTOR;

  if (snap)
    {
      /* We don't want to tile while snapping. Also, clear any previous tile
         request. */
      window->tile_mode = META_TILE_NONE;
      window->tile_monitor_number = -1;
    }
  else if (meta_prefs_get_edge_tiling () &&
           !META_WINDOW_MAXIMIZED (window) &&
           !META_WINDOW_TILED_SIDE_BY_SIDE (window))
    {
      const MetaXineramaScreenInfo *monitor;
      MetaRectangle work_area;

      /* For side-by-side tiling we are interested in the inside vertical
       * edges of the work area of the monitor where the pointer is located,
       * and in the outside top edge for maximized tiling.
       *
       * For maximized tiling we use the outside edge instead of the
       * inside edge, because we don't want to force users to maximize
       * windows they are placing near the top of their screens.
       *
       * The "current" idea of meta_window_get_work_area_current_monitor() and
       * meta_screen_get_current_monitor() is slightly different: the former
       * refers to the monitor which contains the largest part of the window,
       * the latter to the one where the pointer is located.
       */
      monitor = meta_screen_get_current_xinerama (window->screen);
      meta_window_get_work_area_for_xinerama (window,
                                              monitor->number,
                                              &work_area);

      /* Check if the cursor is in a position which triggers tiling
       * and set tile_mode accordingly.
       */
      if (meta_window_can_tile_side_by_side (window) &&
          x >= monitor->rect.x && x < (work_area.x + shake_threshold))
        window->tile_mode = META_TILE_LEFT;
      else if (meta_window_can_tile_side_by_side (window) &&
               x >= work_area.x + work_area.width - shake_threshold &&
               x < (monitor->rect.x + monitor->rect.width))
        window->tile_mode = META_TILE_RIGHT;
      else if (meta_window_can_tile_maximized (window) &&
               y >= monitor->rect.y && y <= work_area.y)
        window->tile_mode = META_TILE_MAXIMIZED;
      else
        window->tile_mode = META_TILE_NONE;

      if (window->tile_mode != META_TILE_NONE)
        window->tile_monitor_number = monitor->number;
    }

  /* shake loose (unmaximize) maximized or tiled window if dragged beyond
   * the threshold in the Y direction. Tiled windows can also be pulled
   * loose via X motion.
   */

  if ((META_WINDOW_MAXIMIZED (window) && ABS (dy) >= shake_threshold) ||
      (META_WINDOW_TILED_SIDE_BY_SIDE (window) && (MAX (ABS (dx), ABS (dy)) >= shake_threshold)))
    {
      double prop;

      /* Shake loose, so that the window snaps back to maximized
       * when dragged near the top; do not snap back if the window
       * was tiled.
       */
      window->shaken_loose = META_WINDOW_MAXIMIZED (window);
      window->tile_mode = META_TILE_NONE;

      /* move the unmaximized window to the cursor */
      prop =
        ((double)(x - display->grab_initial_window_pos.x)) /
        ((double)display->grab_initial_window_pos.width);

      display->grab_initial_window_pos.x =
        x - window->saved_rect.width * prop;

      if (window->frame)
        {
          display->grab_initial_window_pos.y = y + window->frame->child_y / 2;
          display->grab_anchor_root_x = x;
          display->grab_anchor_root_y = y;
        }

      window->saved_rect.x = display->grab_initial_window_pos.x;
      window->saved_rect.y = display->grab_initial_window_pos.y;

      meta_window_unmaximize (window,
                              META_MAXIMIZE_HORIZONTAL |
                              META_MAXIMIZE_VERTICAL);

      return;
    }
  /* remaximize window on an other xinerama monitor if window has
   * been shaken loose or it is still maximized (then move straight)
   */
  else if (window->shaken_loose || META_WINDOW_MAXIMIZED (window))
    {
      const MetaXineramaScreenInfo *wxinerama;
      MetaRectangle work_area;
      int monitor;

      wxinerama = meta_screen_get_xinerama_for_window (window->screen, window);

      for (monitor = 0; monitor < window->screen->n_xinerama_infos; monitor++)
        {
          meta_window_get_work_area_for_xinerama (window, monitor, &work_area);

          /* check if cursor is near the top of a xinerama work area */
          if (x >= work_area.x &&
              x < (work_area.x + work_area.width) &&
              y >= work_area.y &&
              y < (work_area.y + shake_threshold))
            {
              /* move the saved rect if window will become maximized on an
               * other monitor so user isn't surprised on a later unmaximize
               */
              if (wxinerama->number != monitor)
                {
                  window->saved_rect.x = work_area.x;
                  window->saved_rect.y = work_area.y;

                  if (window->frame)
                    {
                      window->saved_rect.x += window->frame->child_x;
                      window->saved_rect.y += window->frame->child_y;
                    }

                  window->user_rect.x = window->saved_rect.x;
                  window->user_rect.y = window->saved_rect.y;

                  meta_window_unmaximize (window,
                                          META_MAXIMIZE_HORIZONTAL |
                                          META_MAXIMIZE_VERTICAL);
                }

              display->grab_initial_window_pos = work_area;
              display->grab_anchor_root_x = x;
              display->grab_anchor_root_y = y;
              window->shaken_loose = FALSE;

              window->tile_mode = META_TILE_NONE;

              meta_window_maximize (window,
                                    META_MAXIMIZE_HORIZONTAL |
                                    META_MAXIMIZE_VERTICAL);

              return;
            }
        }
    }

  /* Delay showing the tile preview slightly to make it more unlikely to
   * trigger it unwittingly, e.g. when shaking loose the window or moving
   * it to another monitor.
   */
  meta_screen_tile_preview_update (window->screen,
                                   window->tile_mode != META_TILE_NONE);

  if (display->grab_wireframe_active)
    old = display->grab_wireframe_rect;
  else
    meta_window_get_client_root_coords (window, &old);

  /* Don't allow movement in the maximized directions or while tiled */
  if (window->maximized_horizontally || META_WINDOW_TILED_SIDE_BY_SIDE (window))
    new_x = old.x;
  if (window->maximized_vertically)
    new_y = old.y;

  /* Do any edge resistance/snapping */
  meta_window_edge_resistance_for_move (window,
                                        old.x,
                                        old.y,
                                        &new_x,
                                        &new_y,
                                        update_move_timeout,
                                        snap,
                                        FALSE);

  if (display->compositor)
    {
      int root_x = new_x - display->grab_anchor_window_pos.x + display->grab_anchor_root_x;
      int root_y = new_y - display->grab_anchor_window_pos.y + display->grab_anchor_root_y;

      meta_compositor_update_move (display->compositor,
				   window, root_x, root_y);
    }

  if (display->grab_wireframe_active)
    meta_window_update_wireframe (window, new_x, new_y,
                                  display->grab_wireframe_rect.width,
                                  display->grab_wireframe_rect.height);
  else
    meta_window_move (window, TRUE, new_x, new_y);
}

static gboolean
update_resize_timeout (gpointer data)
{
  MetaWindow *window = data;

  update_resize (window,
                 window->display->grab_last_user_action_was_snap,
                 window->display->grab_latest_motion_x,
                 window->display->grab_latest_motion_y,
                 TRUE);
  return FALSE;
}

static void
update_resize (MetaWindow *window,
               gboolean    snap,
               int x, int y,
               gboolean force)
{
  int dx, dy;
  int new_w, new_h;
  int gravity;
  MetaRectangle old;
  int new_x, new_y;
  double remaining;
  MetaGrabOp grab_op;

  window->display->grab_latest_motion_x = x;
  window->display->grab_latest_motion_y = y;

  dx = x - window->display->grab_anchor_root_x;
  dy = y - window->display->grab_anchor_root_y;

  new_w = window->display->grab_anchor_window_pos.width;
  new_h = window->display->grab_anchor_window_pos.height;

  /* Don't bother doing anything if no move has been specified.  (This
   * happens often, even in keyboard resizing, due to the warping of the
   * pointer.
   */
  if (dx == 0 && dy == 0)
    return;

  /* FIXME this is only used in wireframe mode */
  new_x = window->display->grab_anchor_window_pos.x;
  new_y = window->display->grab_anchor_window_pos.y;

  if (window->display->grab_op == META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN)
    {
      if ((dx > 0) && (dy > 0))
        {
          window->display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_SE;
          meta_window_update_keyboard_resize (window, TRUE);
        }
      else if ((dx < 0) && (dy > 0))
        {
          window->display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_SW;
          meta_window_update_keyboard_resize (window, TRUE);
        }
      else if ((dx > 0) && (dy < 0))
        {
          window->display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_NE;
          meta_window_update_keyboard_resize (window, TRUE);
        }
      else if ((dx < 0) && (dy < 0))
        {
          window->display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_NW;
          meta_window_update_keyboard_resize (window, TRUE);
        }
      else if (dx < 0)
        {
          window->display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_W;
          meta_window_update_keyboard_resize (window, TRUE);
        }
      else if (dx > 0)
        {
          window->display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_E;
          meta_window_update_keyboard_resize (window, TRUE);
        }
      else if (dy > 0)
        {
          window->display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_S;
          meta_window_update_keyboard_resize (window, TRUE);
        }
      else if (dy < 0)
        {
          window->display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_N;
          meta_window_update_keyboard_resize (window, TRUE);
        }
    }

  /* FIXME: This stupidity only needed because of wireframe mode and
   * the fact that wireframe isn't making use of
   * meta_rectangle_resize_with_gravity().  If we were to use that, we
   * could just increment new_w and new_h by dx and dy in all cases.
   */

  grab_op = window->display->grab_op;

  if (grab_op == META_GRAB_OP_RESIZING_SE ||
      grab_op == META_GRAB_OP_RESIZING_NE ||
      grab_op == META_GRAB_OP_RESIZING_E ||
      grab_op == META_GRAB_OP_KEYBOARD_RESIZING_SE ||
      grab_op == META_GRAB_OP_KEYBOARD_RESIZING_NE ||
      grab_op == META_GRAB_OP_KEYBOARD_RESIZING_E)
    {
      new_w += dx;
    }
  else if (grab_op == META_GRAB_OP_RESIZING_NW ||
           grab_op == META_GRAB_OP_RESIZING_SW ||
           grab_op == META_GRAB_OP_RESIZING_W ||
           grab_op == META_GRAB_OP_KEYBOARD_RESIZING_NW ||
           grab_op == META_GRAB_OP_KEYBOARD_RESIZING_SW ||
           grab_op == META_GRAB_OP_KEYBOARD_RESIZING_W)
    {
      new_w -= dx;
      new_x += dx;
    }

  if (grab_op == META_GRAB_OP_RESIZING_SE ||
      grab_op == META_GRAB_OP_RESIZING_S ||
      grab_op == META_GRAB_OP_RESIZING_SW ||
      grab_op == META_GRAB_OP_KEYBOARD_RESIZING_SE ||
      grab_op == META_GRAB_OP_KEYBOARD_RESIZING_S ||
      grab_op == META_GRAB_OP_KEYBOARD_RESIZING_SW)
    {
      new_h += dy;
    }
  else if (grab_op == META_GRAB_OP_RESIZING_N ||
           grab_op == META_GRAB_OP_RESIZING_NE ||
           grab_op == META_GRAB_OP_RESIZING_NW ||
           grab_op == META_GRAB_OP_KEYBOARD_RESIZING_N ||
           grab_op == META_GRAB_OP_KEYBOARD_RESIZING_NE ||
           grab_op == META_GRAB_OP_KEYBOARD_RESIZING_NW)
    {
      new_h -= dy;
      new_y += dy;
    }

  remaining = 0;

  if (!check_moveresize_frequency (window, &remaining) && !force)
    {
      /* we are ignoring an event here, so we schedule a
       * compensation event when we would otherwise not ignore
       * an event. Otherwise we can become stuck if the user never
       * generates another event.
       */
      if (!window->display->grab_resize_timeout_id)
	{
	  window->display->grab_resize_timeout_id =
	    g_timeout_add ((int)remaining, update_resize_timeout, window);
	}

      return;
    }

  /* If we get here, it means the client should have redrawn itself */
  if (window->display->compositor)
    meta_compositor_set_updates (window->display->compositor, window, TRUE);

  /* Remove any scheduled compensation events */
  if (window->display->grab_resize_timeout_id)
    {
      g_source_remove (window->display->grab_resize_timeout_id);
      window->display->grab_resize_timeout_id = 0;
    }

  if (window->display->grab_wireframe_active)
    old = window->display->grab_wireframe_rect;
  else
    old = window->rect;  /* Don't actually care about x,y */

  /* One sided resizing ought to actually be one-sided, despite the fact that
   * aspect ratio windows don't interact nicely with the above stuff.  So,
   * to avoid some nasty flicker, we enforce that.
   */

  if (grab_op == META_GRAB_OP_RESIZING_S ||
      grab_op == META_GRAB_OP_RESIZING_N)
    {
      new_w = old.width;
    }
  else if (grab_op == META_GRAB_OP_RESIZING_E ||
           grab_op == META_GRAB_OP_RESIZING_W)
    {
      new_h = old.height;
    }

  /* compute gravity of client during operation */
  gravity = meta_resize_gravity_from_grab_op (window->display->grab_op);
  g_assert (gravity >= 0);

  /* Do any edge resistance/snapping */
  meta_window_edge_resistance_for_resize (window,
                                          old.width,
                                          old.height,
                                          &new_w,
                                          &new_h,
                                          gravity,
                                          update_resize_timeout,
                                          snap,
                                          FALSE);

  if (window->display->grab_wireframe_active)
    {
      if ((new_x + new_w <= new_x) || (new_y + new_h <= new_y))
        return;

      /* FIXME This is crap. For example, the wireframe isn't
       * constrained in the way that a real resize would be. An
       * obvious elegant solution is to unmap the window during
       * wireframe, but still resize it; however, that probably
       * confuses broken clients that have problems with opaque
       * resize, they probably don't track their visibility.
       */
      meta_window_update_wireframe (window, new_x, new_y, new_w, new_h);
    }
  else
    {
      /* We don't need to update unless the specified width and height
       * are actually different from what we had before.
       */
      if (old.width != new_w || old.height != new_h)
        meta_window_resize_with_gravity (window, TRUE, new_w, new_h, gravity);
    }

  /* Store the latest resize time, if we actually resized. */
  if (window->rect.width != old.width || window->rect.height != old.height)
    g_get_current_time (&window->display->grab_last_moveresize_time);
}

typedef struct
{
  const XEvent *current_event;
  int           count;
  guint32       last_time;
} EventScannerData;

static Bool
find_last_time_predicate (Display  *display,
                          XEvent   *xevent,
                          XPointer  arg)
{
  EventScannerData *esd = (void*) arg;

  if (esd->current_event->type == xevent->type &&
      esd->current_event->xany.window == xevent->xany.window)
    {
      esd->count += 1;
      esd->last_time = xevent->xmotion.time;
    }

  return False;
}

static gboolean
check_use_this_motion_notify (MetaWindow *window,
                              XEvent     *event)
{
  EventScannerData esd;
  XEvent useless;

  /* This code is copied from Owen's GDK code. */

  if (window->display->grab_motion_notify_time != 0)
    {
      /* == is really the right test, but I'm all for paranoia */
      if (window->display->grab_motion_notify_time <=
          event->xmotion.time)
        {
          meta_topic (META_DEBUG_RESIZING,
                      "Arrived at event with time %u (waiting for %u), using it\n",
                      (unsigned int)event->xmotion.time,
                      window->display->grab_motion_notify_time);
          window->display->grab_motion_notify_time = 0;
          return TRUE;
        }
      else
        return FALSE; /* haven't reached the saved timestamp yet */
    }

  esd.current_event = event;
  esd.count = 0;
  esd.last_time = 0;

  /* "useless" isn't filled in because the predicate never returns True */
  XCheckIfEvent (window->display->xdisplay,
                 &useless,
                 find_last_time_predicate,
                 (XPointer) &esd);

  if (esd.count > 0)
    meta_topic (META_DEBUG_RESIZING,
                "Will skip %d motion events and use the event with time %u\n",
                esd.count, (unsigned int) esd.last_time);

  if (esd.last_time == 0)
    return TRUE;
  else
    {
      /* Save this timestamp, and ignore all motion notify
       * until we get to the one with this stamp.
       */
      window->display->grab_motion_notify_time = esd.last_time;
      return FALSE;
    }
}

static void
update_tile_mode (MetaWindow *window)
{
  switch (window->tile_mode)
    {
      case META_TILE_LEFT:
      case META_TILE_RIGHT:
          if (!META_WINDOW_TILED_SIDE_BY_SIDE (window))
              window->tile_mode = META_TILE_NONE;
          break;
      default:
        break;
    }
}

void
meta_window_handle_mouse_grab_op_event (MetaWindow *window,
                                        XEvent *event,
                                        XIEvent* input_event)
{
  XIDeviceEvent* dev = (XIDeviceEvent*) input_event;

  if (event->type == (window->display->xsync_event_base + XSyncAlarmNotify))
    {
      meta_topic (META_DEBUG_RESIZING,
                  "Alarm event received last motion x = %d y = %d\n",
                  window->display->grab_latest_motion_x,
                  window->display->grab_latest_motion_y);

      /* If sync was previously disabled, turn it back on and hope
       * the application has come to its senses (maybe it was just
       * busy with a pagefault or a long computation).
       */
      window->disable_sync = FALSE;
      window->sync_request_time.tv_sec = 0;
      window->sync_request_time.tv_usec = 0;

      /* This means we are ready for another configure. */
      switch (window->display->grab_op)
        {
        case META_GRAB_OP_RESIZING_E:
        case META_GRAB_OP_RESIZING_W:
        case META_GRAB_OP_RESIZING_S:
        case META_GRAB_OP_RESIZING_N:
        case META_GRAB_OP_RESIZING_SE:
        case META_GRAB_OP_RESIZING_SW:
        case META_GRAB_OP_RESIZING_NE:
        case META_GRAB_OP_RESIZING_NW:
        case META_GRAB_OP_KEYBOARD_RESIZING_S:
        case META_GRAB_OP_KEYBOARD_RESIZING_N:
        case META_GRAB_OP_KEYBOARD_RESIZING_W:
        case META_GRAB_OP_KEYBOARD_RESIZING_E:
        case META_GRAB_OP_KEYBOARD_RESIZING_SE:
        case META_GRAB_OP_KEYBOARD_RESIZING_NE:
        case META_GRAB_OP_KEYBOARD_RESIZING_SW:
        case META_GRAB_OP_KEYBOARD_RESIZING_NW:
          /* no pointer round trip here, to keep in sync */
          update_resize (window,
                         window->display->grab_last_user_action_was_snap,
                         window->display->grab_latest_motion_x,
                         window->display->grab_latest_motion_y,
                         TRUE);
          break;

        case META_GRAB_OP_NONE:
        case META_GRAB_OP_MOVING:
        case META_GRAB_OP_KEYBOARD_MOVING:
        case META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN:
        case META_GRAB_OP_KEYBOARD_TABBING_NORMAL:
        case META_GRAB_OP_KEYBOARD_TABBING_DOCK:
        case META_GRAB_OP_KEYBOARD_ESCAPING_NORMAL:
        case META_GRAB_OP_KEYBOARD_ESCAPING_DOCK:
        case META_GRAB_OP_KEYBOARD_ESCAPING_GROUP:
        case META_GRAB_OP_KEYBOARD_TABBING_GROUP:
        case META_GRAB_OP_KEYBOARD_WORKSPACE_SWITCHING:
        case META_GRAB_OP_CLICKING_MINIMIZE:
        case META_GRAB_OP_CLICKING_MAXIMIZE:
        case META_GRAB_OP_CLICKING_UNMAXIMIZE:
        case META_GRAB_OP_CLICKING_DELETE:
        case META_GRAB_OP_CLICKING_MENU:
        case META_GRAB_OP_CLICKING_APPMENU:
        case META_GRAB_OP_CLICKING_SHADE:
        case META_GRAB_OP_CLICKING_UNSHADE:
        case META_GRAB_OP_CLICKING_ABOVE:
        case META_GRAB_OP_CLICKING_UNABOVE:
        case META_GRAB_OP_CLICKING_STICK:
        case META_GRAB_OP_CLICKING_UNSTICK:
          break;

        default:
          break;
        }
    }

  if (!input_event) 
    return;

  switch (input_event->evtype)
    {
    case XI_ButtonRelease:
      meta_display_check_threshold_reached (window->display,
                                            dev->root_x,
                                            dev->root_y);
      /* If the user was snap moving then ignore the button release
       * because they may have let go of shift before releasing the
       * mouse button and they almost certainly do not want a
       * non-snapped movement to occur from the button release.
       */
      if (!window->display->grab_last_user_action_was_snap)
        {
          if (meta_grab_op_is_moving (window->display->grab_op))
            {
              if (window->tile_mode == META_TILE_MAXIMIZED)
                {
                  meta_window_maximize (window, META_MAXIMIZE_VERTICAL |
                                                META_MAXIMIZE_HORIZONTAL);
                  window->tile_mode = META_TILE_NONE;
                }
              else if (window->tile_mode != META_TILE_NONE)
                {
                  meta_window_tile (window);
                }
              else if (dev->root == window->screen->xroot)
                update_move (window, dev->mods.effective & ShiftMask,
                             dev->root_x, dev->root_y);
            }
          else if (meta_grab_op_is_resizing (window->display->grab_op))
            {
              if (dev->root == window->screen->xroot)
                update_resize (window,
                               dev->mods.effective & ShiftMask,
                               dev->root_x,
                               dev->root_y,
                               TRUE);
              if (window->display->compositor)
                meta_compositor_set_updates (window->display->compositor, window, TRUE);

              /* If a tiled window has been dragged free with a
               * mouse resize without snapping back to the tiled
               * state, it will end up with an inconsistent tile
               * mode on mouse release; cleaning the mode earlier
               * would break the ability to snap back to the tiled
               * state, so we wait until mouse release.
               */
              update_tile_mode (window);
            }
        }

      meta_display_end_grab_op (window->display, dev->time);
      break;

    case XI_Motion:
      meta_display_check_threshold_reached (window->display,
                                            dev->root_x,
                                            dev->root_y);
      if (meta_grab_op_is_moving (window->display->grab_op))
        {
          if (dev->root == window->screen->xroot)
            {
              if (check_use_this_motion_notify (window,
                                                event))
                update_move (window,
                             dev->mods.effective & ShiftMask,
                             dev->root_x,
                             dev->root_y);
            }
        }
      else if (meta_grab_op_is_resizing (window->display->grab_op))
        {
          if (dev->root == window->screen->xroot)
            {
              if (check_use_this_motion_notify (window,
                                                event))
                update_resize (window,
                               dev->mods.effective & ShiftMask,
                               dev->root_x,
                               dev->root_y,
                               FALSE);
            }
        }
      break;

    default:
      break;
    }
}

void
meta_window_set_gravity (MetaWindow *window,
                         int         gravity)
{
  XSetWindowAttributes attrs;

  meta_verbose ("Setting gravity of %s to %d\n", window->desc, gravity);

  attrs.win_gravity = gravity;

  meta_error_trap_push (window->display);

  XChangeWindowAttributes (window->display->xdisplay,
                           window->xwindow,
                           CWWinGravity,
                           &attrs);

  meta_error_trap_pop (window->display, FALSE);
}

static void
get_work_area_xinerama (MetaWindow    *window,
                        MetaRectangle *area,
                        int            which_xinerama)
{
  GList *tmp;

  g_assert (which_xinerama >= 0);

  /* Initialize to the whole xinerama */
  *area = window->screen->xinerama_infos[which_xinerama].rect;

  tmp = meta_window_get_workspaces (window);
  while (tmp != NULL)
    {
      MetaRectangle workspace_work_area;
      meta_workspace_get_work_area_for_xinerama (tmp->data,
                                                 which_xinerama,
                                                 &workspace_work_area);
      meta_rectangle_intersect (area,
                                &workspace_work_area,
                                area);
      tmp = tmp->next;
    }

  meta_topic (META_DEBUG_WORKAREA,
              "Window %s xinerama %d has work area %d,%d %d x %d\n",
              window->desc, which_xinerama,
              area->x, area->y, area->width, area->height);
}

void
meta_window_get_work_area_current_xinerama (MetaWindow    *window,
					    MetaRectangle *area)
{
  const MetaXineramaScreenInfo *xinerama = NULL;
  xinerama = meta_screen_get_xinerama_for_window (window->screen,
						  window);

  meta_window_get_work_area_for_xinerama (window,
                                          xinerama->number,
                                          area);
}

void
meta_window_get_work_area_for_xinerama (MetaWindow    *window,
					int            which_xinerama,
					MetaRectangle *area)
{
  g_return_if_fail (which_xinerama >= 0);

  get_work_area_xinerama (window,
                          area,
                          which_xinerama);
}

void
meta_window_get_work_area_all_xineramas (MetaWindow    *window,
                                         MetaRectangle *area)
{
  GList *tmp;

  /* Initialize to the whole screen */
  *area = window->screen->rect;

  tmp = meta_window_get_workspaces (window);
  while (tmp != NULL)
    {
      MetaRectangle workspace_work_area;
      meta_workspace_get_work_area_all_xineramas (tmp->data,
                                                  &workspace_work_area);
      meta_rectangle_intersect (area,
                                &workspace_work_area,
                                area);
      tmp = tmp->next;
    }

  meta_topic (META_DEBUG_WORKAREA,
              "Window %s has whole-screen work area %d,%d %d x %d\n",
              window->desc, area->x, area->y, area->width, area->height);
}

void
meta_window_get_current_tile_area (MetaWindow *window,
                                   MetaRectangle *tile_area)
{
  int tile_monitor_number;

  g_return_if_fail (window->tile_mode != META_TILE_NONE);

  /* I don't know how to detect monitor configuration changes, so I have to take into account that
   * tile_monitor_number might be invalid. If this happens, I replace it with whatever monitor
   * the window is currently on. This is usually the correct monitor anyway, only in some special
   * cases is the real monitor number actually required (e.g. the window is being moved with the mouse but
   * is still mostly on the wrong monitor).
   */
  if (window->tile_monitor_number >= window->screen->n_xinerama_infos)
    {
      window->tile_monitor_number = meta_screen_get_xinerama_for_window (window->screen, window)->number;
    }

  tile_monitor_number = window->tile_monitor_number;
  if (tile_monitor_number < 0)
    {
      meta_warning ("%s called with an invalid monitor number; using 0 instead\n", G_STRFUNC);
      tile_monitor_number = 0;
    }

  meta_window_get_work_area_for_xinerama (window, tile_monitor_number, tile_area);

  if (window->tile_mode == META_TILE_LEFT ||
      window->tile_mode == META_TILE_RIGHT)
    tile_area->width /= 2;

  if (window->tile_mode == META_TILE_RIGHT)
    tile_area->x += tile_area->width;
}

gboolean
meta_window_same_application (MetaWindow *window,
                              MetaWindow *other_window)
{
  MetaGroup *group       = meta_window_get_group (window);
  MetaGroup *other_group = meta_window_get_group (other_window);

  return
    group!=NULL &&
    other_group!=NULL &&
    group==other_group;
}

/* Generally meta_window_same_application() is a better idea
 * of "sameness", since it handles the case where multiple apps
 * want to look like the same app or the same app wants to look
 * like multiple apps, but in the case of workarounds for legacy
 * applications (which likely aren't setting the group properly
 * anyways), it may be desirable to check this as well.
 */
static gboolean
meta_window_same_client (MetaWindow *window,
                         MetaWindow *other_window)
{
  int resource_mask = window->display->xdisplay->resource_mask;

  return ((window->xwindow & ~resource_mask) ==
          (other_window->xwindow & ~resource_mask));
}

void
meta_window_refresh_resize_popup (MetaWindow *window)
{
  if (window->display->grab_op == META_GRAB_OP_NONE)
    return;

  if (window->display->grab_window != window)
    return;

  /* We shouldn't ever get called when the wireframe is active
   * because that's handled by a different code path in effects.c
   */
  if (window->display->grab_wireframe_active)
    {
      meta_topic (META_DEBUG_WINDOW_OPS,
                  "refresh_resize_popup called when wireframe active\n");
      return;
    }

  switch (window->display->grab_op)
    {
    case META_GRAB_OP_RESIZING_SE:
    case META_GRAB_OP_RESIZING_S:
    case META_GRAB_OP_RESIZING_SW:
    case META_GRAB_OP_RESIZING_N:
    case META_GRAB_OP_RESIZING_NE:
    case META_GRAB_OP_RESIZING_NW:
    case META_GRAB_OP_RESIZING_W:
    case META_GRAB_OP_RESIZING_E:
    case META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN:
    case META_GRAB_OP_KEYBOARD_RESIZING_S:
    case META_GRAB_OP_KEYBOARD_RESIZING_N:
    case META_GRAB_OP_KEYBOARD_RESIZING_W:
    case META_GRAB_OP_KEYBOARD_RESIZING_E:
    case META_GRAB_OP_KEYBOARD_RESIZING_SE:
    case META_GRAB_OP_KEYBOARD_RESIZING_NE:
    case META_GRAB_OP_KEYBOARD_RESIZING_SW:
    case META_GRAB_OP_KEYBOARD_RESIZING_NW:
      break;

    case META_GRAB_OP_NONE:
    case META_GRAB_OP_MOVING:
    case META_GRAB_OP_KEYBOARD_MOVING:
    case META_GRAB_OP_KEYBOARD_TABBING_NORMAL:
    case META_GRAB_OP_KEYBOARD_TABBING_DOCK:
    case META_GRAB_OP_KEYBOARD_ESCAPING_NORMAL:
    case META_GRAB_OP_KEYBOARD_ESCAPING_DOCK:
    case META_GRAB_OP_KEYBOARD_ESCAPING_GROUP:
    case META_GRAB_OP_KEYBOARD_TABBING_GROUP:
    case META_GRAB_OP_KEYBOARD_WORKSPACE_SWITCHING:
    case META_GRAB_OP_CLICKING_MINIMIZE:
    case META_GRAB_OP_CLICKING_MAXIMIZE:
    case META_GRAB_OP_CLICKING_UNMAXIMIZE:
    case META_GRAB_OP_CLICKING_DELETE:
    case META_GRAB_OP_CLICKING_MENU:
    case META_GRAB_OP_CLICKING_APPMENU:
    case META_GRAB_OP_CLICKING_SHADE:
    case META_GRAB_OP_CLICKING_UNSHADE:
    case META_GRAB_OP_CLICKING_ABOVE:
    case META_GRAB_OP_CLICKING_UNABOVE:
    case META_GRAB_OP_CLICKING_STICK:
    case META_GRAB_OP_CLICKING_UNSTICK:
      /* Not resizing */
      return;

    default:
      /* Not resizing */
      return;
    }

  if (window->display->grab_resize_popup == NULL)
    {
      if (window->size_hints.width_inc > 1 ||
          window->size_hints.height_inc > 1)
        window->display->grab_resize_popup =
          meta_ui_resize_popup_new (window->display->xdisplay,
                                    window->screen->number);
    }

  if (window->display->grab_resize_popup != NULL)
    {
      MetaRectangle rect;

      if (window->display->grab_wireframe_active)
        rect = window->display->grab_wireframe_rect;
      else
        meta_window_get_client_root_coords (window, &rect);

      meta_ui_resize_popup_set (window->display->grab_resize_popup,
                                rect,
                                window->size_hints.base_width,
                                window->size_hints.base_height,
                                window->size_hints.width_inc,
                                window->size_hints.height_inc);

      meta_ui_resize_popup_set_showing (window->display->grab_resize_popup,
                                        TRUE);
    }
}

void
meta_window_foreach_transient (MetaWindow            *window,
                               MetaWindowForeachFunc  func,
                               void                  *data)
{
  GSList *windows;
  GSList *tmp;

  windows = meta_display_list_windows (window->display);

  tmp = windows;
  while (tmp != NULL)
    {
      MetaWindow *transient = tmp->data;

      if (meta_window_is_ancestor_of_transient (window, transient))
        {
          if (!(* func) (transient, data))
            break;
        }

      tmp = tmp->next;
    }

  g_slist_free (windows);
}

void
meta_window_foreach_ancestor (MetaWindow            *window,
                              MetaWindowForeachFunc  func,
                              void                  *data)
{
  MetaWindow *w;
  MetaWindow *tortoise;

  w = window;
  tortoise = window;
  while (TRUE)
    {
      if (w->xtransient_for == None ||
          w->transient_parent_is_root_window)
        break;

      w = meta_display_lookup_x_window (w->display, w->xtransient_for);

      if (w == NULL || w == tortoise)
        break;

      if (!(* func) (w, data))
        break;

      if (w->xtransient_for == None ||
          w->transient_parent_is_root_window)
        break;

      w = meta_display_lookup_x_window (w->display, w->xtransient_for);

      if (w == NULL || w == tortoise)
        break;

      if (!(* func) (w, data))
        break;

      tortoise = meta_display_lookup_x_window (tortoise->display,
                                               tortoise->xtransient_for);

      /* "w" should have already covered all ground covered by the
       * tortoise, so the following must hold.
       */
      g_assert (tortoise != NULL);
      g_assert (tortoise->xtransient_for != None);
      g_assert (!tortoise->transient_parent_is_root_window);
    }
}

typedef struct
{
  MetaWindow *ancestor;
  gboolean found;
} FindAncestorData;

static gboolean
find_ancestor_func (MetaWindow *window,
                    void       *data)
{
  FindAncestorData *d = data;

  if (window == d->ancestor)
    {
      d->found = TRUE;
      return FALSE;
    }

  return TRUE;
}

gboolean
meta_window_is_ancestor_of_transient (MetaWindow *window,
                                      MetaWindow *transient)
{
  FindAncestorData d;

  d.ancestor = window;
  d.found = FALSE;

  meta_window_foreach_ancestor (transient, find_ancestor_func, &d);

  return d.found;
}

/* Warp pointer to location appropriate for grab,
 * return root coordinates where pointer ended up.
 */
static gboolean
warp_grab_pointer (MetaWindow          *window,
                   MetaGrabOp           grab_op,
                   int                 *x,
                   int                 *y)
{
  MetaRectangle  rect;
  MetaDisplay   *display;

  display = window->display;

  /* We may not have done begin_grab_op yet, i.e. may not be in a grab
   */

  if (window == display->grab_window && display->grab_wireframe_active)
    {
      meta_window_get_xor_rect (window, &display->grab_wireframe_rect, &rect);
    }
  else
    {
      meta_window_get_outer_rect (window, &rect);
    }

  if (grab_op == META_GRAB_OP_KEYBOARD_MOVING ||
      grab_op == META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN)
    {
      *x = rect.width / 2;
      *y = rect.height / 2;
    }
  else if (grab_op == META_GRAB_OP_KEYBOARD_RESIZING_S)
    {
      *x = rect.width / 2;
      *y = rect.height - 1;
    }
  else if (grab_op == META_GRAB_OP_KEYBOARD_RESIZING_N)
    {
      *x = rect.width / 2;
      *y = 0;
    }
  else if (grab_op == META_GRAB_OP_KEYBOARD_RESIZING_W)
    {
      *x = 0;
      *y = rect.height / 2;
    }
  else if (grab_op == META_GRAB_OP_KEYBOARD_RESIZING_E)
    {
      *x = rect.width - 1;
      *y = rect.height / 2;
    }
  else if (grab_op == META_GRAB_OP_KEYBOARD_RESIZING_SE)
    {
      *x = rect.width - 1;
      *y = rect.height - 1;
    }
  else if (grab_op == META_GRAB_OP_KEYBOARD_RESIZING_NE)
    {
      *x = rect.width - 1;
      *y = 0;
    }
  else if (grab_op == META_GRAB_OP_KEYBOARD_RESIZING_SW)
    {
      *x = 0;
      *y = rect.height - 1;
    }
  else if (grab_op == META_GRAB_OP_KEYBOARD_RESIZING_NW)
    {
      *x = 0;
      *y = 0;
    }
  else
    {
      return FALSE;
    }

  *x += rect.x;
  *y += rect.y;

  /* Avoid weird bouncing at the screen edge; see bug 154706 */
  *x = CLAMP (*x, 0, window->screen->rect.width-1);
  *y = CLAMP (*y, 0, window->screen->rect.height-1);

  meta_error_trap_push_with_return (display);

  meta_topic (META_DEBUG_WINDOW_OPS,
              "Warping pointer to %d,%d with window at %d,%d\n",
              *x, *y, rect.x, rect.y);

  /* Need to update the grab positions so that the MotionNotify and other
   * events generated by the XWarpPointer() call below don't cause complete
   * funkiness.  See bug 124582 and bug 122670.
   */
  display->grab_anchor_root_x = *x;
  display->grab_anchor_root_y = *y;
  display->grab_latest_motion_x = *x;
  display->grab_latest_motion_y = *y;
  if (display->grab_wireframe_active)
    display->grab_anchor_window_pos = display->grab_wireframe_rect;
  else
    meta_window_get_client_root_coords (window,
                                        &display->grab_anchor_window_pos);

  XWarpPointer (display->xdisplay,
                None,
                window->screen->xroot,
                0, 0, 0, 0,
                *x, *y);

  if (meta_error_trap_pop_with_return (display, FALSE) != Success)
    {
      meta_verbose ("Failed to warp pointer for window %s\n",
                    window->desc);
      return FALSE;
    }

  return TRUE;
}

void
meta_window_begin_grab_op (MetaWindow *window,
                           MetaGrabOp  op,
                           gboolean    frame_action,
                           guint32     timestamp)
{
  int x, y;

  warp_grab_pointer (window,
                     op, &x, &y);

  meta_display_begin_grab_op (window->display,
                              window->screen,
                              window,
                              op,
                              FALSE,
                              frame_action,
                              0 /* button */,
                              0,
                              timestamp,
                              x, y);
}

void
meta_window_update_keyboard_resize (MetaWindow *window,
                                    gboolean    update_cursor)
{
  int x, y;

  warp_grab_pointer (window,
                     window->display->grab_op,
                     &x, &y);

  if (update_cursor)
    {
      guint32 timestamp;
      /* FIXME: Using CurrentTime is really bad mojo */
      timestamp = CurrentTime;
      meta_display_set_grab_op_cursor (window->display,
                                       NULL,
                                       window->display->grab_op,
                                       TRUE,
                                       window->display->grab_xwindow,
                                       timestamp);
    }
}

void
meta_window_update_keyboard_move (MetaWindow *window)
{
  int x, y;

  warp_grab_pointer (window,
                     window->display->grab_op,
                     &x, &y);
}

void
meta_window_update_layer (MetaWindow *window)
{
  MetaGroup *group;

  meta_stack_freeze (window->screen->stack);
  group = meta_window_get_group (window);
  if (group)
    meta_group_update_layers (group);
  else
    meta_stack_update_layer (window->screen->stack, window);
  meta_stack_thaw (window->screen->stack);
}

/* ensure_mru_position_after ensures that window appears after
 * below_this_one in the active_workspace's mru_list (i.e. it treats
 * window as having been less recently used than below_this_one)
 */
static void
ensure_mru_position_after (MetaWindow *window,
                           MetaWindow *after_this_one)
{
  /* This is sort of slow since it runs through the entire list more
   * than once (especially considering the fact that we expect the
   * windows of interest to be the first two elements in the list),
   * but it doesn't matter while we're only using it on new window
   * map.
   */

  GList* active_mru_list;
  GList* window_position;
  GList* after_this_one_position;

  active_mru_list         = window->screen->active_workspace->mru_list;
  window_position         = g_list_find (active_mru_list, window);
  after_this_one_position = g_list_find (active_mru_list, after_this_one);

  /* after_this_one_position is NULL when we switch workspaces, but in
   * that case we don't need to do any MRU shuffling so we can simply
   * return.
   */
  if (after_this_one_position == NULL)
    return;

  if (g_list_length (window_position) > g_list_length (after_this_one_position))
    {
      window->screen->active_workspace->mru_list =
        g_list_delete_link (window->screen->active_workspace->mru_list,
                            window_position);

      window->screen->active_workspace->mru_list =
        g_list_insert_before (window->screen->active_workspace->mru_list,
                              after_this_one_position->next,
                              window);
    }
}

void
meta_window_stack_just_above (MetaWindow *window,
                              MetaWindow *above_this_one)
{
  g_return_if_fail (window         != NULL);
  g_return_if_fail (above_this_one != NULL);

  if (window->stack_position < above_this_one->stack_position)
    {
      meta_topic (META_DEBUG_STACK,
                  "Setting stack position of window %s (%d) to %d (making it above window %s).\n",
                  window->desc,
                  window->stack_position,
                  above_this_one->stack_position,
                  above_this_one->desc);
      meta_window_set_stack_position (window, above_this_one->stack_position);
    }
  else
    {
      meta_topic (META_DEBUG_STACK,
                  "Window %s  was already above window %s.\n",
                  window->desc, above_this_one->desc);
    }
}

void
meta_window_stack_just_below (MetaWindow *window,
                              MetaWindow *below_this_one)
{
  g_return_if_fail (window         != NULL);
  g_return_if_fail (below_this_one != NULL);

  if (window->stack_position > below_this_one->stack_position)
    {
      meta_topic (META_DEBUG_STACK,
                  "Setting stack position of window %s to %d (making it below window %s).\n",
                  window->desc,
                  below_this_one->stack_position,
                  below_this_one->desc);
      meta_window_set_stack_position (window, below_this_one->stack_position);
    }
  else
    {
      meta_topic (META_DEBUG_STACK,
                  "Window %s  was already below window %s.\n",
                  window->desc, below_this_one->desc);
    }
}

void
meta_window_set_user_time (MetaWindow *window,
                           guint32     timestamp)
{
  /* FIXME: If Soeren's suggestion in bug 151984 is implemented, it will allow
   * us to sanity check the timestamp here and ensure it doesn't correspond to
   * a future time.
   */

  /* Only update the time if this timestamp is newer... */
  if (window->net_wm_user_time_set &&
      XSERVER_TIME_IS_BEFORE (timestamp, window->net_wm_user_time))
    {
      meta_topic (META_DEBUG_STARTUP,
                  "Window %s _NET_WM_USER_TIME not updated to %u, because it "
                  "is less than %u\n",
                  window->desc, timestamp, window->net_wm_user_time);
    }
  else
    {
      meta_topic (META_DEBUG_STARTUP,
                  "Window %s has _NET_WM_USER_TIME of %u\n",
                  window->desc, timestamp);
      window->net_wm_user_time_set = TRUE;
      window->net_wm_user_time = timestamp;
      if (XSERVER_TIME_IS_BEFORE (window->display->last_user_time, timestamp))
        window->display->last_user_time = timestamp;

      /* If this is a terminal, user interaction with it means the user likely
       * doesn't want to have focus transferred for now due to new windows.
       */
      if (meta_prefs_get_focus_new_windows () ==
               G_DESKTOP_FOCUS_NEW_WINDOWS_STRICT &&
          __window_is_terminal (window))
        window->display->allow_terminal_deactivation = FALSE;
    }
}

/* Sets the demands_attention hint on a window, but only
 * if it's at least partially obscured (see #305882).
 */
void
meta_window_set_demands_attention (MetaWindow *window)
{
  MetaRectangle candidate_rect, other_rect;
  GList *stack = window->screen->stack->sorted;
  MetaWindow *other_window;
  gboolean obscured = FALSE;

  MetaWorkspace *workspace = window->screen->active_workspace;
  if (workspace!=window->workspace)
    {
      /* windows on other workspaces are necessarily obscured */
      obscured = TRUE;
    }
  else if (window->minimized)
    {
      obscured = TRUE;
    }
  else
    {
      meta_window_get_outer_rect (window, &candidate_rect);

      /* The stack is sorted with the top windows first. */

      while (stack != NULL && stack->data != window)
        {
          other_window = stack->data;
          stack = stack->next;

          if (other_window->on_all_workspaces ||
              window->on_all_workspaces ||
              other_window->workspace == window->workspace)
            {
              meta_window_get_outer_rect (other_window, &other_rect);

              if (meta_rectangle_overlap (&candidate_rect, &other_rect))
                {
                  obscured = TRUE;
                  break;
                }
            }
        }
    }

  if (obscured)
    {
      meta_topic (META_DEBUG_WINDOW_OPS,
                  "Marking %s as needing attention\n",
                  window->desc);

      window->wm_state_demands_attention = TRUE;
      set_net_wm_state (window);
    }
  else
    {
      /* If the window's in full view, there's no point setting the flag. */

      meta_topic (META_DEBUG_WINDOW_OPS,
                 "Not marking %s as needing attention because "
                 "it's in full view\n",
                 window->desc);
    }
}

void
meta_window_unset_demands_attention (MetaWindow *window)
{
  meta_topic (META_DEBUG_WINDOW_OPS,
      "Marking %s as not needing attention\n", window->desc);

  window->wm_state_demands_attention = FALSE;
  set_net_wm_state (window);
}

MetaFrame *
meta_window_get_frame (MetaWindow *window)
{
  return window->frame;
}

static gboolean
transient_has_focus (MetaWindow *window,
                     void       *data)
{
  if (window->type == META_WINDOW_MODAL_DIALOG && meta_window_appears_focused (window))
    *((gboolean *)data) = TRUE;

  return FALSE;
}

gboolean
meta_window_appears_focused (MetaWindow *window)
{
  if (!window->has_focus && meta_prefs_get_attach_modal_dialogs ())
    {
      gboolean focus = FALSE;
      meta_window_foreach_transient (window, transient_has_focus, &focus);
      return focus;
    }
  return window->has_focus;
}

gboolean
meta_window_has_focus (MetaWindow *window)
{
  return window->has_focus;
}

gboolean
meta_window_is_shaded (MetaWindow *window)
{
  return window->shaded;
}

MetaRectangle *
meta_window_get_rect (MetaWindow *window)
{
  return &window->rect;
}

MetaScreen *
meta_window_get_screen (MetaWindow *window)
{
  return window->screen;
}

MetaDisplay *
meta_window_get_display (MetaWindow *window)
{
  return window->display;
}

Window
meta_window_get_xwindow (MetaWindow *window)
{
  return window->xwindow;
}

/**
 * meta_window_get_transient_for:
 * @window: a #MetaWindow
 *
 * Returns the #MetaWindow for the window that is pointed to by the
 * WM_TRANSIENT_FOR hint on this window (see XGetTransientForHint()
 * or XSetTransientForHint()). Metacity keeps transient windows above their
 * parents. A typical usage of this hint is for a dialog that wants to stay
 * above its associated window.
 *
 * Return value: (transfer none): the window this window is transient for, or
 * %NULL if the WM_TRANSIENT_FOR hint is unset or does not point to a toplevel
 * window that Metacity knows about.
 */
MetaWindow *
meta_window_get_transient_for (MetaWindow *window)
{
  if (window->xtransient_for)
    return meta_display_lookup_x_window (window->display, window->xtransient_for);
  else
    return NULL;
}

gboolean
meta_window_is_maximized (MetaWindow *window)
{
  return META_WINDOW_MAXIMIZED (window);
}

/**
 * meta_window_is_client_decorated:
 *
 * Check if if the window has decorations drawn by the client.
 * (window->decorated refers only to whether we should add decorations)
 */
gboolean
meta_window_is_client_decorated (MetaWindow *window)
{
  /* Currently the implementation here is hackish -
   * has_custom_frame_extents() is set if _GTK_FRAME_EXTENTS is set
   * to any value even 0. GTK+ always sets _GTK_FRAME_EXTENTS for
   * client-side-decorated window, even if the value is 0 because
   * the window is maxized and has no invisible borders or shadows.
   */
  return window->has_custom_frame_extents;
}

/**
 * meta_window_get_frame_bounds:
 *
 * Gets a region representing the outer bounds of the window's frame.
 *
 * Return value: (transfer none) (allow-none): a #cairo_region_t
 * holding the outer bounds of the window, or %NULL if the window
 * doesn't have a frame.
 */
cairo_region_t *
meta_window_get_frame_bounds (MetaWindow *window)
{
  if (!window->frame_bounds)
    {
      if (window->frame)
        window->frame_bounds = meta_frame_get_frame_bounds (window->frame);
    }

  return window->frame_bounds;
}

void
meta_window_tile_by_side (MetaWindow *window, MetaTileSide side)
{
    switch (side) {
        case META_TILE_SIDE_LEFT:
            window->tile_mode = META_TILE_LEFT; break;
        case META_TILE_SIDE_RIGHT:
            window->tile_mode = META_TILE_RIGHT; break;
        default: return;
    }

    window->tile_monitor_number = meta_screen_get_xinerama_for_window (window->screen, window)->number;
    meta_window_tile (window);
}

void
meta_window_begin_to_move (MetaWindow *window)
{
    if (META_WINDOW_ALLOWS_MOVE (window)) {
        guint32 timestamp = meta_display_get_current_time_roundtrip (window->display);
        meta_window_begin_grab_op (window,
                                   META_GRAB_OP_KEYBOARD_MOVING,
                                   FALSE,
                                   timestamp);
    }
}

